Formation of the CaSnO3 crystalline phase during catalytic aldol condensation of acetone under supercritical conditions

Formation of the CaSnO3 crystalline phase during catalytic aldol condensation of acetone under supercritical conditions Научная публикация

Журнал

Russian Chemical Bulletin
ISSN: 1573-9171 , E-ISSN: 1066-5285

Вых. Данные

Год: 2022, Том: 71, Номер: 9, Страницы: 1930-1939 Страниц : 10 DOI: 10.1007/s11172-022-3611-2

Авторы

Bogdan T.V. ^1,2 , Koklin A.E. ² , Mishin I.V. ² , Mashchenko N.V. ² , Smirnov A.V. ^1,2 , Savarets A.R. ^1,2 , Bogdan V.I. ²

Организации

1	Department of Chemistry, M. V. Lomonosov Moscow State University, Moscow, Russian Federation
2	N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow, Russian Federation

The aldol condensation of acetone was carried out under the conditions of the supercritical state of the reagent (350 °C, 8 MPa; 400 °C, 12 MPa) on catalysts prepared by the thermal treatment of CaSn(OH)6 at 450 and 750 °C. The X-ray amorphous phase of CaSnO3 transforms into crystalline calcium stannate as the thermal treatment temperature increases from 450 to 750 °C. At 350 °C and 8.0 MPa, the selectivity of the reaction to mesityl and isomesityl oxides is about 85% (for both samples), but the conversion of acetone is much higher on CaSnO3 after it has been thermally treated at 750 °C. The reuse of the CaSnO3-450 catalyst led to its transformation. The conversion of acetone increases, and the reaction parameters (conversion and selectivity) reach values characteristic of CaSnO3-750. The catalyst structures were studied by XRD and scanning and high-resolution transmission electron microscopies.

Bogdan T.V. , Koklin A.E. , Mishin I.V. , Mashchenko N.V. , Smirnov A.V. , Savarets A.R. , Bogdan V.I.
Formation of the CaSnO3 crystalline phase during catalytic aldol condensation of acetone under supercritical conditions
Russian Chemical Bulletin. 2022. V.71. N9. P.1930-1939. DOI: 10.1007/s11172-022-3611-2 WOS Scopus OpenAlex

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