Effect of Support Nature on Physicochemical Characteristics and Catalytic Properties of B-P-V-W-Ox Oxide Compositions in the Condensation Reaction by Acetic Acid with Formaldehyde

Autor:	Volodymyr Sydorchuk, A. S. Pavliuk, Volodymyr Ivasiv, Oksana Orobchuk, Svitlana Khalameida, Roman Nebesnyi, O. V. Tsymbalista
Rok vydání:	2020
Předmět:	Oxide Formaldehyde 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Condensation reaction 01 natural sciences 0104 chemical sciences Catalysis Acetic acid chemistry.chemical_compound chemistry Aldol condensation 0210 nano-technology Selectivity Nuclear chemistry Acrylic acid
Zdroj:	Theoretical and Experimental Chemistry. 56:268-274
ISSN:	1573-935X 0040-5760
DOI:	10.1007/s11237-020-09658-y
Popis:	The influence of the support nature on physicochemical characteristics (surface acidity, porous structure) of complex oxide compositions B-P-V-W-Ox and their catalytic properties (activity, selectivity) in the reaction of gas-phase aldol condensation of acetic acid with formaldehyde to obtain acrylic acid was studied. It was found that the activity of catalysts varies symbolically with the size of the specific surface, and the selectivity of the formation of acrylic acid is determined by the presence of weak acid centers on the surface of the catalyst. In the presence of the catalyst B-P-V-W-Ox/TiO2 at a temperature of 375°C, acrylic acid was obtained with a yield of ~59% with a selectivity of formation of 92%.
Databáze:	OpenAIRE
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