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Study of the development of Alite crystallinity
Lakomá, Karolína ; Fridrichová, Marcela (referee) ; Dvořák, Karel (advisor)
The bachelor thesis summarizes current knowledge in the field of preparation and various influences on the structure of alite in triclinic modification. The work is mainly focused on the study of the development of crystallinity during heating and short isothermal endurance. Within the work, the production of pellets is optimized and the functionality of the experimental furnace for firing triclinic alite is verified.
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Study of Alit structure and stability
Pernicová, Kateřina ; Všianský,, Dalibor (referee) ; Dvořák, Karel (advisor)
The diploma thesis deals with the laboratory preparation of the main clinker mineral alite. The theoretical part summarizes the main findings of recent research. The practical part is devoted to the preparation and optimization of the methodology for the preparation of alite polymorph. The main goal was to prepare monoclinic phases of M1 and M3 alites and analyze their properties by available analytical methods.
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Synthesis of Ru-doped titania and its photocatalytic properties
Houšková, Vendula ; Štengl, Václav ; Murafa, Nataliya ; Bakardjieva, Snejana
rystalline Mania particles doped with ruthenium oxide have been prepared by homogenous hydrolysis of TiOSO4 in aqueous solutions in the presence of thioacetamide and RuCl3 at 80 degrees C After annealing at 600 degrees C in oxygen atmosphere for 2 hours the synthesis of the Ru-doped Mania powders was complete The effects of the Ru doping on the morphology and microstructure of TiO2 nanoparticles and their impacts on the photocatalytic activity were studied The synthesized particles were characterized by X-ray diffraction (XRD), Scanning Electron Microscopy (SEM) and Nitrogen adsorption-desorption was used for surface area (BET) and porosity determination (BM) The photocatalytic activity of Ru-doped mania samples was determined by photocatalytic decomposition of Orange II dye in an aqueous slurry during irradiation at 365 nm and 400 nm wavelength The Ru-doped Mania samples demonstrated enhanced photocatalytic activity under UV and visible light.
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