Utilization of Acetone, By-Product of Cumene Process for Phenol Production, via BaSnO3-Catalyzed Aldol Condensation

Авторы: Bogdan T.V., Krasnikov P.A., Smirnov A.V., Koklin A.E., Mashchenko N.V., Bogdan V.I.
Журнал: Doklady Physical Chemistry
Том: 507
Номер: 2
Год издания: 2022
Издательство: Maik Nauka/Interperiodica Publishing
Местоположение издательства: Russian Federation
Первая страница: 139
Последняя страница: 144
DOI: 10.1134/S0012501622600231
Аннотация: The aldol condensation of acetone under supercritical conditions at 300–400C and 11.0 MPa wascarried out with BaSnO3-450 and BaSnO3-750 catalysts prepared by calcination of BaSn(OH)6 at 450 and750C, respectively. Conducting the reaction under these conditions makes it possible to overcome the problem of catalyst deactivation by coking and to obtain valuable chemicals with high selectivity. At 300C, bothcatalysts provide selectivity of 77–87% to isomeric mesityl oxides (C6 products). At 400C with the BaSnO3-450catalyst, the selectivity significantly changes from C6 to C9 (phorones). Powder X-ray diffraction and TEMdata attest to the multiphase nature of the samples, which contain barium stannates, barium carbonate, andtin oxide. It was found that the catalyst structure rearranges in situ, which greatly affects the catalytic properties and is most pronounced for BaSnO3-450.
Добавил в систему: Богдан Татьяна Вениаминовна

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