FCT
ICT Prague
Technická 5
166 28 Praha 6
Phone: +420-220443768
fax: +420-224310422
e-mail: cht@vscht.cz
Postgraduate
Faculty of chemical technology offers education in following postgraduate programmes:
- Preparation of Thin Films for RTG Optics
(Doc. Ing. Vratislav Flemr, CSc.)
Preparation of surface high quality and good stability nickel coatings and exactly formed wafers of monocrystalline silicon. The results will be used for a construction of RTG mirrors used in space research.
- Fluorinated tripyrazolylborates and tripyrazolylmethanes as ligands for fluorous chemistry
(Doc. Ing. Jaroslav Kvíčala, CSc.)
Fluorous tripyrazolylborates and tripyrazolylmethanesare yet unknown class of ligands for fluorous chemistry. The project is aimed in the synthesis, complexation properties and applications in the transition metal chemistry. - Fluorous NHC ligands and their complexes
(Doc. Ing. Jaroslav Kvíčala, CSc.)
The project is aimed in the synthesis of nitrogen heterocyclic carbenes substituted with polyfluoroalkyl or polyfluoropolyoxaalkyl groups, their use as the ligands of transition metals and application of these complexes in homogeneous catalysis.
- Degradation of Albumin and Collodion Photographic Materials
(Dr. Ing. Michal Ďurovič)
This work will be focused on the study of mechanisms of aging light-sensitive layers of albumin and collodion positives (or negatives) during their long storage in depositories. It will be monitored primarily affect of support, gaseous pollutants and aerosols on the stability of the photographic image.
- Polymerization and copolymerization of cyclic esters
(Doc.Ing.Irena Prokopová, CSc.)
The aim of the work is synthesis of copolymers of cyclic esters with other cyclic monomers. An important goal of the work will be the study of the correlation between the copolymer structure and their degradation rate in different media. - Rheological evaluation of rubbers and their mixtures
(Doc.Ing.Antonín Kuta, CSc.)
Knowledge of rheological behaviour of rubbers and their mixtures is important for optimal setup of individual technological steps (mixing, extrusion, calendering,..) in rubber manufacturing. However, rheological evaluation still is not common practice in rubber industry. The behaviour during processing is more or less successfully estimated on the basis of simple conventional tests. Undoubtedly, rheological properties are related to rubber molecular structure and mixture composition. The study of these relations including relation to conventional tests will be studied. - Devulcanisation and revulcanisation of waste rubber
(Prof.Ing.Vratislav Ducháček,DrSc.)
Preparation of model rubber compounds based on different rubbers and curing systems. Determination of the course of their vulcanisation and basic properties of vulcanisates. Mechanical and mechanochemical destruction of vulcanised rubber. Appreciation of processability of the arising material. Appreciation of the term "devulcanisation". Formulation of compounds based on the "devulcanisates". Search of suitable conditions (pressure, temperature) for their revulcanisation. Vulcanisation of the compounds. Determination of basic properties of materials obtained. Evaluation of the mechanism of "devulcanisation" and "revulcanisation" of cured rubber and eventually of possibilities of their next recycling (reclaiming). - Polymeric plasticizers based on caprolactone
(Ing.Radka Kalousková, CSc., Doc.Ing.Jiří Brožek, CSc.)
The study will be focused on the application of ecologically friendly polymeric plasticizers based on caprolactone to PVC plasticizing. New types of plasticizers will be synthesized and characterized. An innovative part is represented by unconventional procedures in plasticizer application and formation of plasticizer during PVC manufacturing process, i.e. polymerization of low-mass substances. - Environmentally friendly stabilizing systems for PVC mixtures
(Ing.Radka Kalousková, CSc., Prof.Ing.Vratislav Ducháček, DrSc.)
Demanding requirements on environmentally friendly aditives for polymer processing motivate a study of non toxic compounds as that of PVC co-stabilizers (e.g. compounds based on synthetic hydrotalcite). The addition of these substances provides increasing of PVC stability without increasing of heavy metals concentration in PVC stabilizing system. The finding of correlations between chemical structure of these compounds and their efficiency of HCl neutralization and the positive influence of primary stabilizers is the object of the study. - Preparation of composite materials based on plastic blends
(Ing.Jan Šimek, CSc., Prof.Ing.Vratislav Ducháček, DrSc.)
The work will be aimed to the ecological evaluation of waste plastics blends, especially polyamides with polyolefins. Physical properties and morphology of binary and ternary blends will be studied via utilization of compatibilizing additives. The blends will be tested first of all from the point of view impact streght enhancement by SEM, DSC, DMA and Charpy hammer - Preparation and characterization of poly(vinylchloride)/mineral fillers nanocomposites with enhanced impact strength and thermal stability.
(Ing.Jan Šimek, CSc.)
In the work, new progress of nanocomposite materials based on PVC and mineral fillers preparation will be studied. A part of the work will be focussed on a way of intercalation of filler layers and another one on appreciation of properties of nanocomposite materials obtained. SEM,TEM,DSC,DMA technigues as well as appreciation of thermal stability and mechanical properties determination will be used. - Modification of rubber compounds with liquid elastomers
(Ing.Zdeněk Hrdlička, Ph.D., Doc.Ing.Antonín Kuta, CSc.)
Low-molecular weight liquid elastomers can facilitate processing of rubber compounds from standard high-molecular weight rubber. They can also reduce the energy comsumed at mixing. However, these liquid modifiers may co-vulcanise with the solid rubber insufficiently. The main challenge of the disertation is to investigate the influence of liquid rubber microstructure on ability of co-vulcanisation of the both rubbers and on the nature of vulcanisate network.
- Mixed oxides' preparation and properties modification using sol-gel methods
(Ing. Kateřina Rubešová, Ph.D.)
Work will focus on preparation of mixed oxides with specific electrical, magnetic and optical properties. Sol-gel methods will be used for preparing oxides of high homogeneity. Eventually, gels will be used for thin films deposition by spin coating. - Thermodynamic modelling in systems of dilute magnetic semiconductors
(Prof. Dr. Ing. David Sedmidubský)
Phase equilibria calculations and construction of phase diagrams in the systems of dilute magnetic semiconductors (based on GaN and ZnO) with a main scope to determine the solubility of magnetic dopants. Dilute magnetic semiconductors are considered as prospective materials for spintronic applications. - Crystal chemistry and thermoelectric properties of cobaltites
(Prof. Dr. Ing. David Sedmidubský)
Study of the relationship between structure, composition and physical properties of cobaltites in order to optimise the thermoelectric figure of merit for their applications in thermoelectric conversion. - Calculations of Thermodynamic Properties of Nuclear Materials using Ab-initio methods
(Prof. Dr. Ing. David Sedmidubský)
The electronic structure of selected nuclear materials will be calculated using LAPW and pseudopotential methods within DFT. The enthalpies of formation and mixing will be evaluated from the total energies and the phonon spectra, low-temperature heat capacities and entropies will be calculated from the obtained Hellmann-Feynman forces. - Formation and reactivity of coordination compounds studied by electrochemical methods.
(Ing. Irena Hoskovcová, CSc)
Characterization of the ligand – metal interaction and the dependence between structure and redox behaviour by electrochemical methods. Study of mechanisms of electrooxidation and electroreduction by spectroelectrochemical methods. Calculation of FOMO energy and comparision of the results with the trends found experimentally - Structure and magnetic properties of mixed cobalt oxides
(Dr. RNDr. Karel Knížek)
An experimental study of the relations between the crystal structure, chemical composition and magnetic properties of ternary cobalt oxides with a mixed cobalt valence using X-ray and neutron diffraction and magnetic moment in a broad temperature range. A particular focus will be put on the inspection of the influence cobalt spin state transitions and magnetic field on the potential applications in thermoelectric power conversion. - Development of novel erbium-ytterbium silicate glass for planar optical waveguide amplifier
(Ing. Pavla Nekvindová Ph.D.)
The aim of the work is to develop erbium ytterbium silicate glass suitable for the preparation of planar optical amplifier and its fabrication. - Study of carbon based materials
(Ing.Zdeněk Sofer, PhD.)
The synthesis of carbon-based nanomaterials will involve carbon nanotubes and graphene based materials. The carbon materials will be synthetized by CVD methods and characterized by scanning probe microscopy (AFM, STM, Kelvin probe microscopy, etc.), Raman microscopy, BET measurement and thermal analysis. - Electric and transport properties of mixed cobalt oxides for thermoelectric applications
(Ing. Jiří Hejtmánek, CSc.)
A complex study of electric and thermal properties (resistivity, thermoelectric power, thermal conductivity and specific heat) of ternary cobalt oxides with a mixed cobalt valence in a broad temperature range. The primary aim is the optimization of thermoelectric figure of merit of, in particular, two-dimensional phases with Co in low spin state by modifying chemical composition and considering their potential application in high temperature thermoelectric power conversion in oxidizing environment - Synthesis and characterization of nanostructured semiconductors of AIIIBV and AIIBVI type.
(Ing.Zdeněk Sofer, PhD.)
The topic concerns the synthesis of nanostructured semiconductors in a form of thin films, nanowires and quantum dots. The synthesis methods will be based on MOVPE and CVD technology. The semiconductors will be characterized using a number of analytical methods (AFM, micro-photoluminescence, Raman microscopy, thermal analysis, magnetic and transport measurements). This study will be performed also in cooperation with the Institute of Physics ASCR.
- Preparation and properties of hybrid organic-inorganic materials
(Dr. Ing. Jana Hodačová)
The project deals with synthesis, characterization of study of silseskvioxane based chiral materials prepared by the sol-gel technique. The new materials will be tested and potential enantioselective heterocyclic catalysts. The project is supported by Czech Science Foundation and will be studied in cooperation with ENSCM Montpellier (France). - Photochemically and electrochemically active chiral macrocycles
(Dr. Ing. Jana Hodačová)
The goal of the project is synthesis of large chiral macrocycles possessing a photochemically and electrochemically active structural elements, e.g. Ru(bpy)3 complexes, metaloprofyrines, ferrocenes, etc. The properties of the complexes will be studied with the respect to their applications as sensors for detection chiral biological compounds. - Application of vis-carbene complexes in organic synthesis
(Prof. Ing. Dalimil Dvořák, CSc.)
Preparation of new alkoxy and amino bis-carbeno complexes will be studied utiliznd Pd-catalyzed organotic compounds.The complexes will be applied for synthesis of functionalized complex molecules by, e.g. the Dötz reaction and photochemistry. - Derivatization of thiacaliux[n]arene skeleton
(Prof. Ing. Pavel Lhoták, CSc.)
The presence of sulfide units changes substantially the properties if thiacalix[a]arenes. Regioselective derivatization of tbe basic skeleton will be studied with respect to the the calixarene conformations. The products will serve for the synthesis of complex calixarene based systems. - m-Substitution of calixarenes and related compounds
(Prof. Ing. Pavel Lhoták, CSc.)
The goals is to study introduction of substituents into the m-position of calixarene and thiacalixarene skeleton, resp. These inherent chiral systems will enable to construct various choral receptors for selective complexation of higher fullerenes, anions and aminoacids. - Novel nano-sized liquid crystals
(Prof. Ing. Jiří Svoboda, CSc.)
The aim is design and synthesis of new types of nano-sized oligomeric liquid crystals, study their mesomorphic behaviour to recognize the structure-property relationship. - Synthesis of aminoaryl derivatives of biologically relevant S- and N-nucleophiles
(Doc. Ing. Igor Linhart, CSc.)
Arylnitrenium ions are formed by metabolic activation of mutagenic and carcinogenic aromatic amines as well as of nitroaromatics. They react in vivo with biologically important S- a N-nucleophiles. The aim of this dissertation is to study synthetic routes leading to aminoaryl derivatives of cysteine and those of purine bases, to be used in subsequent studies on chemical interactions of arylnitrenium ions with biologically relevant S- a N-nucleophiles.
- Study of non-activated anionic polymerization and copolymerization of lactams
(Prof.Ing.Jan Roda, CSc.)
Usually the initiation system for (co)polymerization of lactams is composed from two components - initiator and activator. If the polymerization is promoted only by initiator, the polymerizing systems frequently behaves unexpectedly and unusually above all in the case of copolymerization. The research will be directed to the copolymerization of 6-caprolactam with other accesible lactams in the broad interval of temperature and for different initiators of lactam anionic polymerization. The possible technological aspect resp. application will be taken into account. - Study of initiation systems for anionic lactam polymerization
(Prof.Ing.Jan Roda, CSc.)
Rapid anionic lactam polymerization is started by the two component initiation system formed from initiator (salt of lactam) and N-acyllactam activators or their precursors. By the type of initiation system and by the ratio of its components not only the course of polymerization process but also the properties of product can be adjusted resp. regulated. Only little attention was devoted to the initiation systems comprising Mg or Al initiators. Research will be focused on the activitity of initiators mentioned and evaluated by polymerization kinetics above and below the melting temperature of polymers and by polymer properties. The result can enrich both basic research and oriented one. - Biodegradable polymer materials
(Doc.Ing.Jiří Brožek, CSc.)
The aim of work is synthesis of biologically degradable copolyesters and polyesteramides suitable for preparation of foils, microfiber and nanofiber layers suitable for application in medicine. - Preparation of polyamide nanocomposites
(Doc.Ing.Jiří Brožek, CSc.)
The work is focused on the preparation and characterization of novel hybrid materials based on layered inorganic fillers (layered silicate, double hydroxide and graphene) and polyamide 6. These materials will be prepared by in situ polymerization of hexano-6-lactam in the presence of fillers or by melt blending of components. - Preparation and Characterization of Polymeric Materials Based on Polyimides
(Doc.Ing.Petr Sysel, CSc.)
The preparation of the materials based on polyimides with controlled structure will be studied. To reach this aim the polymeric architecture will be tailored (hyperbranched polyimides) or polyimides combined with other components (additives, polymers). The influence of structure on the thermal, chemical, mechanical and transport properties will be evaluated. - Polyalkene based block copolymers
(Ing.Jan Merna, Ph.D.)
The aim of the work is to synthesize catalytic systems for carbon monoxide conversion to biodegradable polymeric materials. In the first phase, the main attention will be focused on reaction of carbon oxides with epoxides leading to polyesters. Stereoregularity of the obtained polymers will be evaluated and their properties will be compared with highly stereoregular natural polymers. The work has interdisciplinary character with focus on organometallic and polymer synthesis followed by study of biological degradation of prepared materials. - Catalytic synthesis of biodegradable polymers based on carbon monoxide
(Ing.Jan Merna, Ph.D.)
The aim of the work is to synthesize highly active and selective new catalytic systems for carbon dioxide and carbon monoxide conversion to new polymeric materials. In the first phase, the main attention will be focused on reaction of carbon oxides with epoxides leading to biodegradable polyesters and polycarbonates. Stereoregularity of the obtained polymers will be evaluated and their properties will be compared with highly stereoregular natural polymers. The work has interdisciplinary character with focus on organometallic and polymer synthesis followed by study of biological degradation of prepared materials. - Quantum-chemical modeling of catalysts for olefin living coordination polymerizations
(Ing.Jan Merna, Ph.D.)
The goal of the work is to calculate geometries of complexes suitable for living coordination polymerizations and their most common reaction coordinates using DFT method. The results of the work should allow one to predict influences of steric and electronic effects of ligand structure on the extent of transfer and termination reactions and help to find the catalyst with both “ideal” living behavior and high polymerization activity at the same time. Another goal of the work is to study the mechanism of catalytic polymerizations by modeling of catalysts spectra. Where possible, calculated data will be correlated with experimental results and the general validity of the obtained theoretical results will be evaluated. - Nickel diimine complexes catalyzed preparation of special polyalkenes
(Ing.Jan Merna, Ph.D.)
The goal of the projekt is investigation between structure of diimine catalyst and properties of prepared polyolefin. Firstly, research will be focused on synthesis of catalysts capable to control polymer molar mass and its distribution (living polymerization), stereoselectivity and chain branching. Secondly, block copolymers, end-functionalized polyolefins and other advanced macromolecular architectures will be prepared using procedures developed for control of individual chain parameters. Mechanism of polyreaction will be studied in detail by means of kinetic and spectral methods.
- Chemical space as a source of novel drugs
(Doc. Ing. Daniel Svozil, Ph.D.)
Chemical space is occupied by all possibly existing (i.e. energetically stable) organic compounds. It is vast comprising between 1060 and 10200 molecules. However, based on certain structural parameters it is possible to define its smaller distinct subspaces. Between the most important belongs the subspace containing drugs or ligands representing a probes in chemical biology. The size of the chemical space prevents its full exploration, and thus only its smaller parts are systematically mapped. Still, this brings valuable insights into the biological processes at the molecular level. Research of new bioactive compounds thus leads to better understanding of the drug action, and to the development of novel strategies for treatment of diseases. The aim of the disertation work is the design of computational approaches for chemical space exploration, visualization, and classification facilitating better development of new drugs and chemical biology tools.
- Crystal structure solution by combination of data from ss-NMR, structure prediction and powder diffraction.
(Dr. Ing. Michal Hušák)
When we have no singe crystal diffraction data available we can solve the structure from alternative experiments. We can predict the structure and confirm the prediction by experimental and theoretical ss-NMR data comparison. The process can be combined with data obtained by powder diffraction. The target of this work is to test this synthetic approach for crystal structure solution.
" - Pharmaceutical Cocrystals
(prof. RNDr. Bohumil Kratochvíl, DSc.)
Pharmaceutical cocrystals are H-bonded multicomponent mixtures formed from a molecular or ionic substance and a cocrystal former, which are solids under ambient conditions. The cocrystals are the latest material investigated to enhance drug properties such as solubility, dissolution rate, stability, powder flow, and hygroscopicity. Very close to cocrystals are salts which can be distinguished by the localization of proton between an acid and base. Crystal engineering of cocrystals is based on the concept of supramolecular synthons. The major experimental techniques in cocrystal screening are cocrystallization in solution, solvent evaporation, melt crystallisation, dry cogrinding, solvent-assisted grinding and cryogrinding. "
- The effect of solid dosage form formulation on the drug release
(Doc. Ing. Petr Zámostný, Ph.D.)
This work is aimed at the study of the drug release from the solid dosage forms in relation to their altering formulation using the compendia dissolution test. The results of dissolution testing will be analyzed in respect to the changes of the manufacturing parameters or the formulation change via statistical methods and mathematical modeling. - Pyrolysis gas chromatography for forensic analysis of pharmaceutical products
(Doc. Ing. Petr Zámostný, Ph.D.)
Pyrolysis gas chromatography / mass spectrometry is analytical technique combining the thermal decomposition of solid or liquid sample and the separation and detection of decomposition products by GC-MS. Thus a key feature of the technique is the ability to analyze solid samples by a sensitive technique, that is normally exclusive for volatile samples. The technique allows obtaining the „pyrolysis fingerprint“, i.e. the analytical record characterized by high degree of specificity to any particular sample without having to identify decomposition products individually. The feature can be exploited in identifying and validating samples of paints, plastics, fibers, toners and other print materials, as well as pharmaceutical products. This work should be aimed at developing a technique for investigating and validating the genuineness of pharmaceutical products using pyrograms as chemical „fingerprints“ of said products. In addition, the limits of possible reconstruction of original sample composition should be also examined. - Personalized medicine of pulmonary disease - a new trend in medical diagnosis
(Doc. Ing. Petr Kačer, Ph.D.)
The work is focused on the area of personalized medicine as a new trend in medical diagnostics. Personalized medicine employs genomic and molecular analyses of body fluids and tissues to diagnose diseases and monitor a therapy. For a wider expansion into routine medical practice in the diagnosis of lung diseases, it is necessary to find specific substances characteristic for concrete diseases – the so-called "biomarkers". For these substances, an analytical method combining separation of biomarkers from complex biological matrices (urine, blood plasma, cerebrospinal fluid, exhaled breath condensate) with a highly sensitive and accurate method of mass spectrometry will be developed. - Development of a diagnostic strip for medical diagnostics
(Doc. Ing. Petr Kačer, Ph.D.)
The work is focused on the field of preparation of a diagnostic strip for a semi-quantitative determination of major lifestyle diseases (eg. asthma, various types of cancer) from body fluids. The diagnostic strip should consist of immobilized antibodies against specific substances characteristic for concrete diseases (so-called "biomarkers") to porous polymeric supports. Concentrations of biomarkers should be determined on the basis of color change strip, which was the result of binding an antigen and antibody. - Development of a method for routine determination of psychotropic substances in the organism
(Doc. Ing. Petr Kačer, Ph.D.)
The work is focused on the field of development of a method for a semi-quantitative determination of ingestion of psychotropic substances from body fluids (urine, saliva). In the first phase of work, it is necessary to find suitable metabolites of psychotropic substances in the mentioned body fluids. The diagnostic strip will be developed for metabolites of the psychotropic substances. The diagnostic strip will function on the basis of a reaction of antigen with antibody. - Development of methods for diagnosing of Alzheimer's disease
(Doc. Ing. Petr Kačer, Ph.D.)
The work is focused on the field of development of a method based on mass spectrometry for the diagnostics of Alzheimer's disease in cerebrospinal fluid. The work will be engaged to the development of a multi-marker screening for the identification and quantification of a number of significant biomarkers of Alzheimer's disease - neuroprostanes. The principle of the developed methods should be a combination of suitable separation techniques (imunoextraction, solid phase extraction (SPE)) with a highly selective and sensitive detection method - mass spectrometry. - Preparing the MIP for the separation of neurotransmitters in the brain
(Doc. Ing. Petr Kačer, Ph.D.)
The work is focused on the field of the development of MIP (Molecule Imprinting Polymer) as a rapid and highly specific tool for the separation of neurotransmitters (dopamine, serotonin) and their metabolites from complex matrices (brain tissue, micro dialysates) before the analysis on the basis of mass spectrometry. - Development of magnetic nanoparticles for medical diagnosis
(Doc. Ing. Petr Kačer, Ph.D.)
The work is focused on the area of preparation and characterization of magnetic nanoparticles functionalized with specific molecular structures allowing a highly selective separation of target structures (body molecules produced in pathological processes known as markers) in complex biological matrices such as blood plasma, breath condensate, cerebrospinal liquor, urine and others. The work is concentrated on both processes, i.e. the preparing of uniform magnetic nanoparticles and their characterization, and on their testing in the diagnostic processes. The method of separation of magnetic nanoparticles will be compared to current methods used in the clinical practice. - Development of stereoselective catalytic reduction systems for C = N bond
(Doc. Ing. Petr Kačer, Ph.D.)
The work is focused on the area of preparation and characterization of new catalytic systems for asymmetric hydrogenation of C = N double bond. The aim of the work is the development of new stereoselective homogeneous catalysts exhibiting suitable parameters (stereoselectivity, activity, the possibility of regeneration) for their application in pharmaceutical process technology. The work will encompass both the rational design of catalytic systems based on similarities in the methods of molecular modeling and the synthesis of selected structures and their consecutive kinetic testing with model substances containing C = N double bond. The work will be directed to a practical application, i.e. finding an industrial form of a catalytic system and development applicable to a technological process of production of a modern myorelaxants on the basis of curare’s alkaloids. - The development of nanoparticles for targeted drug delivery
(Doc. Ing. Petr Kačer, Ph.D.)
The work is focused on the area of preparation and characterization of functionalized gold nanoparticles for a highly specific active transport of cytostatic drugs. The work will be concentrated to the preparation of gold nanoparticles and their coating structures designed to "accept" the immune system. Furthermore, a method of immobilization of other structures on the functionalized particles will be developed and standardized, i.e. the aim will be to anchor structures responsible for specific interaction ("uptake") to target molecular structures located on tumor cells, as well as cytostatic active molecules (drugs). - Development of new compounds for borone capture therapy
(Doc. Ing. Petr Kačer, Ph.D.)
The aim of this project is to synthesize new potential boron-rich substances applicable to Boron Capture Therapy (BNCT) that will not only exhibit specificity to tumor cells, but also will contain a structure of a middle molecular mass. Furthermore, these substances will not undergo a significant accumulation in the liver. The work will be concentrated to: /1/ the design and construction of suitable boron compounds applicable to BNCT treatment of tumors, particularly brain /2/ the utilization of appropriate structures for increasing the selectivity of a potential drug for selected types of tumors /3/ the design of the final drug form including the drug dosing. - Synthesis and development of th enew 4th generation cytostatics
(Doc. Ing. Petr Kačer, Ph.D.)
The work is oriented into the area of new platinum complexes with potential cytostatic activity. The rational design as well as a preparation of new platinum complexes in laboratory scale is the main topic. Before the actual work will be handled in detail literature review focused on the use Pt(II) complexes with cytostatic activity. Literature will also be the topic of a new direction in cancer therapy - the use Pt(IV) complexes. In their work will then be examined reaction conditions for preparation of complexes in order to prepare analogues of picoplatin, oxaliplatin and platinum in oxidation state (IV). - Observation of the physical and physico-chemical parameters of the solid dosage forms depending on time
(Doc. Ing. Petr Zámostný, Ph.D.)
The work concerns the research of physical, physico-chemical and textural parameters of selected medicinal products depending on time. The products will be subjected to the heat and moisture conditions for various periods of time and also the reproducibility of each single solid dosage form preparation and the influence of the raw materials obsolescence will be studied.
- Influence of the fuel impurities on the fuel cell power output and lifetime
(prof. Dr. Ing. Karel Bouzek)
Fuel cells have been subject of a rapid development within the last decade. As a most perspective fuel hydrogen is most generally given for this type of technology. Oxygen from the air is typically used as an oxidant. It may, however, contain a broad spectrum of impurities. This is especially true for the large agglomerations. The aim of this project is to assess influence of the impurities present typically in this medium on the efficiency and life time of the fuel cell. - Study of the degradation processes in the mid-temperature PEM type fuel cells
(prof. Dr. Ing. Karel Bouzek)
An attention of the numerous laboratories around a globe is focused on the issue of the PEM type fuel cells operational temperature increase above 100 ºC. The globaly accepted approach to solve this problem consists in application of basic polymers impregnated with phosphoric acid as an electrolyte and carbon supported Pt nanoparticles as an electrolyte. The main obstacle of this approach represents corrosion aggressivenes of the phosphoric acid at the fuel cell operational conditions. The closer understanding of these processes represents an important condition of further improvement of this technology and its future practical application. - Water electrolysis as a hydrogen source for the energetics
(prof. Dr. Ing. Karel Bouzek)
Water electrolysis represents an important part of the hydrogen economy considered nowadays as a promissing approach to the future securing of the human society with electrical energy. Industrial water electrolysis processes established today suffer from several disadvantages when considering its application in the field of energetics. It is mainly its low efficiency and flexibility. Therefore, this process is a subject of interest of numerous research laboratories arround the globe. Electrode reaction kinetics, suitable polymer electrolytes and overall process design represent the main issues studied. Corrosion stability of the individual construction materials is also an issue. - Mathematical modelling of the electrochemical systems
(prof. Dr. Ing. Karel Bouzek)
Mathematical modeling represents an extraordinary powerful tool for deeper understanding of the electrochemical units function and their subsequent optimization. Within the framework of this project the attention will focus on the mathematical description of the local potential and current density distribution. Subsequently the problem of the mass transfer in an electric field will be studied. The models formulated will be implemented to simulate systems with a practical impact. - High temperature water electrolysis
(prof. Dr. Ing. Karel Bouzek)
High temperature water electrolysis represents a modern technology closely related to the optimization of operational conditions of the traditional as well as novel high capacity power sources used nowadays to the stabilization of the electricity distribution grid. Stabilization requirement is caused by the strongly increasing capacity of the unstable renewable energy sources connected to the distribution grid. - Electrochemical ferrate(VI) synthesis
(prof. Dr. Ing. Karel Bouzek)
Ferrate(VI) is a compound being characterized by its high redox potential. It makes it interesting as an oxidant from the point of view of the chemical synthesis or water purification and disinfection. Electrochemical synthesis represents highly interesting and perspective rout of its production. The main issue represents synthesis efficiency and product stability. The aim of this study is to deepen the understanding of the electrochemical Ferrate(VI) formation and optimization of its industrial production conditions. - Preparation and properties of photocatalysts sensitive in visible light
(prof. Dr. Ing. Josef Krýsa)
The efficiency of photocatalysis on TiO2 is low due to the small share of absorbed sunlight and high hole-electron recombination. Different ways lead to the enhancement of photocatalytic processes efficiency. One possibility is the application of other semiconducting photocatalyst (WO3) with lower width of forbidden gap. Such a catalysts is capable to utilize radiation with higher wave lengths, and thus to utilize larger part of sun light. Unfortunately the layer of WO3 is not perfectly stable so a combination of both photocatalysts in multilayer films form seems to be a good solution. Another possibility is doping of titanium oxide by nitrogen or sulphur and shift of absorption spectra into visible light. Synthetised materials in the form of powders and thin films will de characterized and determined their photoactvity in liquid and gaseous phase. - Development and application of thin coatings containing titanium dioxide in consideration of their application as self-cleaning and disinfecting surfaces
(prof. Dr. Ing. Josef Krýsa)
The main scope of this work is preparation of photocatalytic active TiO2 films coated on the appropriate substrate (ceramics, glass, metals) by different methods. The important part of the work is films characterization (XRD, SEM, Raman spectroscopy) and development of methods for testing photoactivity and hydrophilic and antibacterial properties of prepared layers. Studied parameters will be the methods of precursor deposition (dip-coating, spraying) and methods of low-temperature anatase preparation. - Mathematical modeling of N2O-free ammonia oxidation catalytic reactor
(Doc. Ing. Bohumil Bernuer, CSc.)
The topic of this work is the development of dynamic mathematical model of catalytic reactor for high temperature ammonia oxidation in which new catalysts are applied allowing to decrease substantially N2O emission from nitric acid plants in comparaison with existing Pt-Rh catalysts. Both laboratory and process data will be used in aiming to design industrial reactor giving low N2O emissions. - Kinetics of catalytic decomposition of N2O on zeolite catalysts
(Doc. Ing. Bohumil Bernuer, CSc.)
The topic of this work is the study of kinetics of N2O decomposition on zeolitic (MFI, FER) and titano-silicates catalysts involving Fe and other transition metals. The work will be focused on kinetic experiments in aiminf to develop reliable kinetic model suitable for desing of industrial equipment. - Membrane reactor for application in water gas shift reaction
(doc. Ing. Bohumil Bernauer, CSc./ Dr. Ing. Vlastimil Fíla)
Hydrogen is very important chemical raw material for many synthesis, refining or as a gas fuel. One step of hydrogen production is CO conversion by water vapour (WGS). It is equilibrium catalytic reaction and it has to take place in membrane reactor with continuous withdrawing of forming products. Scope of this work is development and testing of membrane reactors with membrane based on microporous material. - Methane aromatization on the zeolite catalysts
(doc. Ing. Bohumil Bernauer, CSc./ Dr. Ing. Vlastimil Fíla)
Methane transformation to special products is very important process today. Non-oxidative catalytic methane aromatization with selective microporous catalyst is used for treatment of gas to benzen and other aromates. Catalysts for this process will be developed in the work. Influence of reaction conditions, catalyst carrier and formation of active phase on catalyst deactivation or methane conversion will be studied. - Mathematical modelling of membrane processes using universal simulation programs
(doc. Ing. Bohumil Bernauer, CSc./ Dr. Ing. Vlastimil Fíla)
Membrane processes are very perspective. In this work static or dynamic models of select membrane devices and subsequently design of new technologies will be developed using universal simulation programs. Verification of developed models by experimental data will be implemented. Aim of this work is the improvement of economic and ecological parameters of studied technology. - Mathematical modelling of complex technological units using universal simulation program ASPEN PLUS
(doc. Ing. Bohumil Bernauer, CSc./ Dr. Ing. Vlastimil Fíla)
The static and dynamic models of select advanced technologies or their parts will be developed using universal simulation programs. By the help of them and computer experiment the behaviour of these technologies will be studied. Verification of developed models by experimental data will be implemented. Aim of the work is the improvement of economic and ecological technological parameters. - Preparation and characterization of composite membranes with microporous separative layer based on molecular sieves
(doc. Ing. Bohumil Bernauer, CSc./ Dr. Ing. Vlastimil Fíla)
Membranes with microporous separative layers (e.g. Silikalit-1, ETS, FAU,TS-1) on ceramic or metal carriers will be synthetized. Scope of this work will be study of their separative properties for hydrocarbons, CO2 and H2 . Mathematical models for multicomponent transport in prepared inhomogeneous membranes will be developed also. - Membrane reactor for dehydrogenation of alkanes and cycloalkanes
(doc. Ing. Bohumil Bernauer, CSc./ Dr. Ing. Vlastimil Fíla)
Catalytic dehydrogenation of light alkanes is one of the possible processes for production of alkenes. These reactions are the endothermic equilibrium reactions carried out under relatively high temperature to reach higher yields. Due to high reaction temperature the side products are produce and simultaneously the catalyst deactivates which requires frequent reactivation. One alternative to increase yield and selectivity of reaction and decrease catalyst deactivation is application of membrane reactors. The work is focused on development of membrane reactors for above mentioned reactions. - Application of membranes for biogas treatment
(doc. Ing. Bohumil Bernauer, CSc./ Dr. Ing. Vlastimil Fíla)
Membrane processes are very perspective. In this work the membranes for purification of biogas from CO2 and others impurities will be developed and tested.
- Microstructures of porous solids and composite materials and reconstruction methods of their microstructures
(Doc. Ing. Pavel. Čapek, CSc.)
The work is focused on study of porous media and composite materials. Knowledge of the pore structure or the composite material structure is significant for understanding transport phenomena. Their quantitative prediction is, for example, a necessary condition of successful design of separation processes. Primary information on the microstructure is obtained from planar cuts through a porous solid or a composite material. The three-dimensional microstructure (volume image or replica) is reconstructed using methods of stochastic reconstruction or process-based methods. In the next step transport phenomena are simulated in replicas. In order to evaluate the entire procedure of reconstruction and transport phenomenon simulation, resulting effective values of diffusivity and permeability are compared with their experimental counterparts. A student should have good knowledge of chemical engineering, mathematics and physics. He/she should also be skilled in a laboratory. - Effects of coke deposition on catalytic reactions
(Doc. Ing. Pavel Čapek, CSc.)
The work is focused on theoretical and experimental study of coke formation in porous catalysts and on coke formation effects on the course of catalytic reactions. An important part of the work is a model of coke formation. This model is based on three-dimensional random pore network, in which simple geometric objects model real pores of complex morphology. Pore network parameters are determined using a reconstruction method and transformation of pore space replicas into pore networks. Simulation results are compared with experiments for a selected catalytic system. A student should have good knowledge of chemical engineering, mathematics and physics. He/she should also be skilled in a laboratory. - Effects of hydrodynamics on hydrogenation in multiphase reactor
(Doc. Ing. Vratislav Tukač, CSc.)
Sustainable environment protection and care on human health require continual increase of effectivity of raphination processes carried out in multiphase reactors, namely, olefine hydrogenation or deep hydrodesulphuration of engine fuels. The goal of this project is to evaluate interaction among hydrodynamics, mass and heat transfer, operation conditions and productivity and selectivity of multiphase hydrogenation reactor. Both experiments and mathematical modeling focused evaluation of hydrodynamic parameters by residence time distribution methods (RTD) and computed flow dynamics (CFD) by finite element method would be used. Proper software for process simulation Matlab, Aspen Plus and COMSOL Multiphysics is available. - Partial oxidation of hydrocarbons - Optimization of industrial process
(Prof. Ing. Zdeněk Bělohlav, CSc.)
The aim of the doctoral thesis will be a detailed survey and evaluation of all important process parameters of partial hydrocarbons oxidation in Unipetrol RPA company. Optimization of operating reactors, notably in terms of by-products, will be based on methods of archival operational data mining, supplemented by operational experiments. Addressing this issue will be greatly supported by the Research and Education Center UniCRE. - Use of modified molecular sieves for the preparation of chemical specialties
(Prof. Ing. L. Červený, DrSc. /Ing. E. Vyskočilová, Ph.D.)
The work will be focused on optimizing the preparation of mesoporous molecular sieves with different pore size and their modification by different functional groups. Modifications will be carried out with regard to properties of modifying functional groups (eg. acidity-basicity). After a review on concerned topic appropriate functional groups, that should be suitable as catalysts for various chemical reactions leading to the preparation of chemical specialties used as fragrances or drug precursors, will be selected. - Use of modified layered double hydroxides for preparation of chemical specialties
(Prof. Ing. L. Červený, DrSc. /Ing. E. Vyskočilová, Ph.D.)
The work will be focused on the use and modification of hydrotalcite like compounds for the synthesis of chemical specialties. These materials are very important in catalysis and are used in a wide range of organic reactions due to their acid-base properties. Multifunctional catalysts can be obtained by modification of these materials eg. by a metal and multistep synthesis can be simplified in so called "one-pot" reaction. After a review on concerned topic, possible applications and modifications of hydrotalcite like compounds will be selected for the preparation of chemicals specialties used as fragrances or drug precursors.
- Effect of structural instability of high-alloy materials on their corrosion resistance
(doc.Ing.Jaroslav Bystrianský, CSc.)
The use of alloy steels or Ni alloys at high temperatures is limited due to their structural instability. Construction materials will be monitored for changes in mechanical properties and in particular for changes in resistance to corrosion and high temperature oxidation. For aqueous environment will be evaluated influence of structural changes on the resistance to localized corrosion. - Evaluation of properties of high temperature oxides for estimating the lifetime of heat resistant materials
(doc.Ing.Jaroslav Bystrianský, CSc.)
Based on the evaluation of specific properties of high temperature oxides model to estimation of heat resistant materials lifetime will be prepared. Using the model tests will be verified protective properties of high-temperature oxides. - Development of quantitative models for evaluation of the residual life of power equipment
(doc.Ing.Jaroslav Bystrianský, CSc.)
For environmentally stimulated damages, models for their quantitative evaluation will be developed. Developed tools will be suitable both for design activity and for the prediction of residual life. - Nanostructured surfaces for bioapplications
(doc. Ing. Luděk Joska, CSc.)
Surface state is very important from the interaction of cells with metallic biomaterials point of view. Ordered nanostructured structure is possible to prepare on many materials with electrochemical methods. Properties of such system is possible to change by alloying, heat treatments. Then objective of the thesis will be to prepare bioactive surfaces on metallic materiaks. - Corrosion behaviour of metallic materials for medical applications
(doc. Ing. Luděk Joska, CSc.)
Wide spectrum of metallic materials is nowadays available for medical applications, Corrosion resistance is, provided biodegradability is not expected, under normal exposure conditions very high. Critical can be such situations as inflammation and other health problems which can corrosion resistance change. These situations will be modelled. Another important field is corrosion of porous materials and layered structures based on highly corrosion resistant metals and alloys. The objective will be corrosion study of the newly developed materials under laboratory conditions and in vitro as well as in vivo biological conditions. - Recycling of Li-batteries
(doc. Ing. Jitka Jandová, CSc.)
It is expected that world lithium consumption will significantly increase due to the increasing use of Li-batteries in upcoming electric and hybrid vehicles. As the demand and prices of rise, spent lithium batteries will be economically feasible raw materials for the production of Li and other metals, such as Co and Ni. Processing of Li-batteries will decrease their disposal which is risky due to the occurrence of residual Li-metal. - Powder metallurgy of high strength and thermally stable Al-based alloys
(doc. Dr. Ing. Dalibor Vojtěch)
Purpose of this work is preparation and investigation of aluminium alloys containing transition metals (Cr, Fe, Ti, Zr, Ni, Mn etc.). These alloys show high strength and significantly higher thermal stability as compared to the common Al-based alloys. Investigated materials will be prepared by powder metallurgy including rapid solidification of melts, pressing and sintering of rapidly solidified powders and forming. - Preparation and properties of nano-crystalline phases
(doc. Dr. Ing. Dalibor Vojtěch)
Nano-crystalline materials often show interesting mechanical, chemical and physical properties, such as high strength, plasticity, thermal stability, catalytic activity etc. This work is aimed to verify preparation methods of nano-crystalline phases, such as rapid cooling, deposition, crystallization of amorphous phases, selective leaching etc. The products obtained will be characterised with respect to its structure, particle size and shape, phase composition, mechanical properties, behaviour at elevated temperatures, capability of absorbing hydrogen etc. - Properties of biodegradable Mg-based alloys for medical applications
(doc. Dr. Ing. Dalibor Vojtěch)
Magnesium is a nontoxic metal showing a good mechanical properties and a relatively rapid corrosion in a human body. The work will be focused on study of Mg-based alloys as potential materials for medical implants capable of spontaneous degradation in a human body to form non-toxic products. - Properties of nanocrystalline aluminium alloys prepared by ultra-rapid solidification
(doc. Ing. Pavel Novák, Ph.D.)
Aluminium alloys prepared by ultra-rapid solidification processes are characterized by higher thermal stability and strength comparing with common aluminium alloys. In this work, the dependence of microstructure and properties of selected aluminium alloys on the production conditions and alloy composition. Microstructure and phase composition of the alloys will be studied predominantly by transmission electron microscopy. Thermal stability, mechanical and physical properties of the prepared alloys will be measured. - The corrosion mechanism of canisters in deep geological repository of radioactive waste
(prof. Ing. Pavel Novák, CSc.)
The estimation of canisters lifecycle for deep geological repositories of radioactive waste is serious problem all around the world as well as Czech Republic. Carbon steel and copper are considered as suitable construction materials. A detail knowledge of corrosion mechanism in the environment of repository is necessary for reliable extrapolation of measured data to required lifecycle 100 000 years. The environment is anoxic pore solution of surrounding bentonite backfill, containing mainly bicarbonates, sulfates and chlorides. Situation is even more complex due to the presence of microbial activity (especially H2S, COS) and limited mass transport from canister surface. The aim of this work will be laboratory short-term and long-term experiments using electrochemical and analytical methods. - Natural and artificial copper patina defects
(prof. Ing. Pavel Novák, CSc.)
The work will be focused on estimation of causes of dark sites presence in natural copper patina. These sites differ in morphology or chemical and phase composition. The stability of artificial patina in atmospheric environment will be observed as well. This research will be complemented by research of stable artificial patina based on brochantite.
- Homogenization processes in glass preparation by melting
(Prof. Ing. Lubomír Němec, DrSc., školitel specialista: Doc.Ing. Jaroslav Kloužek, CSc.)
The glass preparation from crystalline raw materials involves several processes which form a homogeneous glass melt from the arising mixture of melt, undissolved particles and bubbles. The kinetics of the dissolution and separation (bubble removal) processes in the stage of melt affects substantially the energy consumption and melting performance of the glass melting spaces. The significant factors of enhancement of the dissolution processes are the natural and forced convection of the melt whereas the application of an additive force as the centrifugal force, e.g., accelerates the bubble separation from the melt. The important role of process topology in the continuous melting space is described by a new relative quantity called utilisation of the space. The space utilisation can be significantly affected by the character of the melt flow in the space. The topic applies the mathematical modelling of dissolution and separation processes in the melting spaces in order to define the optimal conditions and design of the glass melting spaces. - Heavy metal oxide glasses
(Doc.Ing. Jaroslav Kloužek, CSc., školitel specialista: Ing. Petr Kostka, Ph.D.)
The glass network of heavy metal oxide glasses is formed by oxides such as TeO2, GeO2 or Sb2O3 instead of SiO2. These glasses stand out in comparison with conventional glasses particularly by wide interval of transparency ranging up to much longer wavelengths, lower phonon energies, higher refractive index, outstanding nonlinear properties, high solubility of rare-earth ions accompanied by high quantum yield of radiative transition etc. The work will focus on the preparation and characterization of new materials – glasses – containing antimony and/or bismuth oxides. Characterization of the prepared materials will include their basic properties such as density, molar volume, thermal stability, chemical resistance, hardness, optical transmission, refractive index, etc. Correlation between structural units forming the glass network and the resulting properties will be investigated and the influence of processing conditions during glass preparation on these properties will be evaluated. - Chalcogenide glasses and optical fibres
(Doc.Ing. Jaroslav Kloužek, CSc., školitel specialista: Ing. Petr Kostka, Ph.D.)
Glass network of chalcogenide glasses is formed by S, Se or Te in combination with metals and/or semimetals. The presence of oxygen in these materials is usually undesirable. Real applications of this type of glass are conditioned mainly by high purity of the prepared or manufactured materials. Procedures for preparing high-purity chalcogenide glasses allowing for their use in fiber optics, already exist. The work will include the preparation of chalcogenide glasses, optimization of their composition, dotation of materials by rare earth ions and examination of the relationship between the vitreous matrix and the dopant. It is also possible to focus some of the efforts on new technological procedures for further material purification. The subsequent step will be to prepare preforms for optical fibres drawing, including the processing of structured preforms for drawing optical microstructured fibres (photonic crystal fibres) and characterization of prepared fibres.
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(prof. Ing. Jindřich Leitner, DrSc.)
Preparation of nanoparticles of metallic elements, alloys and inorganic compounds (oxides, nitrides), their characterization and measurements of heat capacities, temperatures and enthalpies of fusion and solid-state transformations. Theoretical modeling of size-dependence of these properties. - Metal-semiconductor contacts on SiC
(doc. Ing. Petr Macháč, CSc.)
The choice of metallization, preparation of metal-semiconductor contact structures, studying of their properties with concentration on the processes that occur during the thermal annealing of the structures, studying of problems connected with the stability of metal-semiconductor contacts. The studying and application of nonstandard process of contact structure preparation based on the epitaxial growth of a subcontact layer from a Si-Ge system and other similar processes. - Preparation of graphene layers on SiC
(doc. Ing. Petr Macháč, CSc.)
The choice of suitable methods for the preparation of graphene layers on SiC with consideration for workplace facilities. The optimization of the process of graphene layer preparation, the study of their parameters (structural and electrical), the measurement of their thickness. The exfoliation of graphene layers on dielectric substrates. - Laser nanopatterning of solid surfaces
(Ing. Petr Slepička, Ph.D.)
Study of interaction of laser beam with solid surface (polymer, glass, thin metal layer). Preparation of modified polymers by the exposure of solid substrate above and below the ablation threshold, characterization of surface chemistry and morphology changes induced by the excimer laser beam exposure. Construction of continuous and discontinuous structures on modified substrates. Study of surface diffusion and heat treatment of nanostructures. Interaction of laser beam with the substrates with deposited metal nanostructures and theirs characterization. Interdisciplinary character of work – possible applications in chemistry, electronics and in biocompatibility studies (tissue enginnering). - Biocompatibility of modified polymers
(prof. Ing. Václav Švorčík, DrSc.)
Study of adhesion and proliferation of smooth muscel cells and keratinocytes on modified polymers. Study of the relationship between the physico-chemical properties e.g. grafted films and their biocompatibility. Cells' adhesion and prolifeation will be studied in vitro. The work has an interdisciplinary character (chemistry, physics, biology). - Properties of metalnanostructures
(prof. Ing. Václav Švorčík, DrSc.)
Study of metal nanostructures on different substrates. Metal structure deposition on different substrates, layer and stucture characterization, interdisciplinary character of work chemistry, physics, electronics) - Preparation of polymer optical metamaterials
(prof. Ing. Václav Švorčík, DrSc.)
Work will focus on experimental and theoretical study and the preparation of polymer metamaterials that means periodical systems of optical microresonators. The metamaterials have important optical features characterised with negative refraction index and they will allow production of new optical components in future. The aim of the work will design the technological process, which allows the use of optical metamaterials in the near infrared wavelengths.
- Structure of glass and glass-crystal interfaces
(Prof. RNDr. Ondrej Gedeon, Ph.D.)
Glass structure can be simulated by means of Molecular Dynamics. The obtained structure is characterized by the structural quantifiers as radial distribution functions, coordination numbers, Q-motifs, and rings, that describe geometrical and topological structure of amorphous material in different ranges. The aim of the work is to simulate phase interfaces of glass-vacuum, glass-glass and-crystal. - Changes in structure and properties of irradiated glass
(Prof. RNDr. Ondrej Gedeon, Ph.D.)
Glass irradiated with particles responses with changes of density, refractive index, chemical composition, fictive temperature, surface roughness, etc. Changes are related with structural relaxation of glass, amount of deposited energy and charge, properties, structure, and composition of glass and dose. The aims of the work is to investigate and quantify glass response to electron (optionally proton and photon) irradiation, establish classes of easily and hardly modified glasses and describe structural relaxation of glass. - Kinetics and mechanisms of crystal glasses corrosion
(Prof.Ing. Aleš Helebrant, CSc.)
The aim of this thesis is the experimental study of crystal glasses interaction with aqueous solutions of different pH values and determination of kinetics and mechanism of this process using mathematical models - Chemical durability of sol-gel layers prepared on glass substrates
(Prof.Ing. Aleš Helebrant, CSc.)
The aim of this thesis is quantitative mathematical and physico-chemical description of thin layers prepared by sol-gel methods. Experiments consist of preparation of single and multiplied sol-gel layers and testing of their interaction in different aqueous solutions. Experimental results will be described using existing or modified glass corrosion models. - Optimization of technological parameters of all-electric furnaces for domestic glass industry
(Doc. Ing.Stanislav Kasa, CSc)
The goal of work should be the proposal of perspective and recent design all-electric glass melting furnace for domestic glass industry with optimal technological parameters which will fulfil the requirements concerning to energy saving, quality of molten glass and ecological load the surroundings of furnaces. As optimized technological parameters will studied the position and intensity of thermal barrier, distribution of electrodes in melting tank, the way of batch charging on the surface of glass melt and power flexibility of furnace. The method of mathematical simulation by means of CFD programme FLUENT will be used to study of above mentioned technological parameters of all-electric glass melting furnaces. - Stability of alumosilicate polymers on metakaoline basis
(Doc.RNDr. František Škvára, DrSc)
The aim of this thesis is description of parameters for long terme stability of aluminosilicate polymers onr metakaoline basis. Experimental part of disertation: preparation of alumosilicate polymers on the metakaoline basis with diffrent conditons of praparation and different composition, analysis of properties with TA, SEM, NMR in solid state, meachnical and micromechanical properties, leachability. - Microstructure-property relations in functional ceramics
(Doc. Dr. Willi Pabst)
This work deals with the mathematical modeling of effective properties of functional ceramics (conventional and nanocrystalline) and ceramic composites, in particular with the dependence of electric and magnetic properties on the volume fractions of the individual phases (including porosity) and the size, shape and arrangement of grains and pores. The work is focussed on analytical modeling based on micromechanics, but additional numerical modeling approaches will be supported as well. This work requires enthusiasm for applied mathematics, but a critical mind with respect to numerical solutions, and above all the willingness to delve into the classical theory of electromagnetism (Maxwell-Mie theory), modern theories of continuum thermodynamics (linear Onsager school and nonlinear Truesdell school) as well as the exact theory of heterogeneous materials (micromechanics) and its approximations for the description of functional ceramics in practice. - Insulating silicate-based ceramic building materials
(Doc. Dr. Willi Pabst)
This work deals with the design and development of new methods for the preparation or production of insulating ceramic building materials (porous bricks) based on traditional silicate-based raw materials (containing clay minerals). The porous materials prepared will be characterized from the viewpoint of mecahnical properties (strength, elastic moduli) as well as thermophysical properties (specific heat, thermal conductivity) and others. Experimental data will be compared with predictions based on analytical (micromechanical) calculations and numerical modeling. - Thermomechanical properties of mono- and multiphase refractory materials
(Doc. Dr. Willi Pabst)
This work deals with the mathematical modeling of the effective thermomechanical properties of refractories (dense or porous) and special engineering ceramics for high-temperature applications, with special regard to the influence of porosity and the size and shape of grains and pores. The aim of this work is the elaboration and application of a unified theoretical framework for the description of thermophysical, mechanical and thermomechanical properties in dependence of the microstructure, the practical computation of effective properties and thermomechanical parameters for common types of materials produced and applied today, and the proposal and testing of new methods for the preparation of porous silcate- or oxide-based refractories, including the characterization of microstructure and properties. - Antibacterial properties of sol-gel layers
(Prof.Ing. Josef Matoušek, DrSc.)
The work is focused on the relation between bacericidity and composition of sol-gel layers. - Optical glass for photonics
(Prof. Ing. Aleš Helebrant, CSc.; Ing. Martin Míka, Ph.D.)
The development and preparation of new optical glass that can be used as lasers, amplifiers and splitters processing optical signals. Study of relations between glass composition and optical properties. For more information visit www.vscht.cz/sil/model/a15. - Materials for highly efficient solar panels
(Prof. Ing. Aleš Helebrant, CSc.; Ing. Martin Míka, Ph.D.)
The development, preparation and testing of new materials that can significantly increase the efficiency of currently available solar panels. Study of relations between photovoltaic efficiency and the composition of prepared materials. For more information visit www.vscht.cz/sil/model/a15. - High temperature properties of castables
(doc.Ing. J.Kutzendörfer, CSc.)
The goal of the work is determination of mathematical relationships describing the high temperature behavior.