A numerical study has been performed modeling the gas-phase reactions occurring during the chemical vapor deposition ~CVD! of alumina from AlCl3 /CO2 /H2 mixtures. The purpose is to answer whether and to what extent trends in the decomposition of AlCl3 via gas-phase reactions can explain experimentally observed trends in CVD deposition of aluminum-containing films. The AlCl3 decomposition is pr...

Field emission scanning electron microscopy (FESEM), two-dimensional X-ray diffraction (2DXRD), and transmission electron microscopy coupled with selected area electron diffraction (TEMSAED) analyses of the reactant/product textural relationship show that the thermal decomposition of Iceland spar single crystals according to the reaction CaCO3(s) → CaO(s) + CO2(g) is pseudomorphic and topotacti...

In contrast to past studies of thermal decomposition mechanisms of explosives designed to determine the detailed chemical pathways by which these large organic molecules are transformed into small reaction products (N2, NO, N2O, HCN, CO, CO2, H2O, etc.)—crucial to predicting long-term stability for storage; sensitivity to heat and mechanical impact; and risk assessment associated with their usa...

Nanoparticles of perovskite-type LaCo0.5Fe0.5O3 (LCFO) were fabricated by sol–gel method.Thermal decomposition process of the complex precursor was examined by means of differentialthermal analysis–thermal gravimetric analysis (DTA/TGA). X-ray diffraction (XRD) resultsshowed that single perovskite phase has been completely formed after calcination at 750 °C. Inaddition, the surface morphology a...

Thermochemical studies of hydroxycinnamic acid derivatives and their surface complexes are important for the pharmaceutical industry, medicine and for the development of technologies of heterogeneous biomass pyrolysis. In this study, structural and thermal transformations of caffeic acid complexes on silica surfaces were studied by UV-Vis spectroscopy, thermogravimetric analysis, temperature pr...

kinetics of radical polymerizations of waterborne alkyd/acrylic hybrid resin via batch mini-emulsion technique was studied using redox initiators (tbhp/fe2+/edta/asac  and  tbhp/fe2+/edta/sfs) at relatively low temperatures and thermal initiators (bpo, kps and aibn) at higher temperatures to seek the most suitable initiator system. at the end of all reactions the unreacted monomer content was r...

Urea Phthalic acid crystalline material was grown by slow evaporation method. The studied Coats – Redfern method to calculate the thermal kinetic parameters. By analyzing results, nature of decomposition reaction investigated. calculated values parameters indicate that is suitable for device fabrication applications.

Vapour thermolysis processes of copper(I1) bis-chelate complexes with different p-diketones in the 160640°C temperature range were studied by using the high-temperature source of a molecular beam with mass spectrometric recording of the gas phase composition directly at the outlet from the thermal reactor. Schemes of a heterogeneous decomposition of these compounds vapour were suggested on the ...