Indium-zirconium oxide catalysts: An impact of dopants on CO2 hydrogenation to methanol

Indium-zirconium oxide catalysts: An impact of dopants on CO2 hydrogenation to methanol Научная публикация

Журнал

Inorganic Chemistry Communications
ISSN: 1387-7003 , E-ISSN: 1879-0259

Вых. Данные

Год: 2025, Том: 181, Номер: 1, Номер статьи : 115145, Страниц : DOI: 10.1016/j.inoche.2025.115145

Авторы

Mashkin Mikhail Yu. ^1,2 , Fedorova Anna A. ¹ , Efremov Roman A. ¹ , Batkin Alexander M. ² , Kapustin Gennady I. ² , Mishin Igor V. ² , Tkachenko Olga P. ² , Nizameev Irek R. ³ , Kustov Leonid M. ^1,2 , Kustov Alexander L. ^1,2

Организации

1	Department of Chemistry, M. V. Lomonosov Moscow State University, Moscow 119234, Russia
2	N. D. Zelinsky Institute of Organic Chemistry, Moscow 11991, Russia
3	Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Sciences, Kazan 420088, Russia

The series of the catalysts based on commercial zirconia supports modified by different oxides (Si, La, Y, Ti, or W) were synthesized via the wet impregnation method to obtain 5 wt% In2O3 supported catalysts. The samples were studied by the N2 adsorption-desorption technique, SEM with EDX, TEM, XRD, DRIFTS of adsorbed CO and CO2, XPS, and were tested in the catalytic hydrogenation of CO2 to methanol. The revealed correlations between the number of oxygen defects, the ability of the catalysts to adsorb and retain CO,H2, and CO2, and the catalytic performance may be used in designing new catalytic systems. Carbon monoxide adsorption (estimated by DRIFT spectra area) affects the selectivity to methanol, while CO2 adsorption mostly affects the yield of methanol. The optimal catalyst 5In2O3/ZrO2(Y) reached the yield of methanol of 0.3 gmethanol gcatalyst−1 h−1 with the selectivity to methanol of 85 % at 300 °C, 50 bar, CO2/H2 1:3.

Mashkin M.Y. , Fedorova A.A. , Efremov R.A. , Batkin A.M. , Kapustin G.I. , Mishin I.V. , Tkachenko O.P. , Nizameev I.R. , Kustov L.M. , Kustov A.L.
Indium-zirconium oxide catalysts: An impact of dopants on CO2 hydrogenation to methanol
Inorganic Chemistry Communications. 2025. V.181. N1. 115145 . DOI: 10.1016/j.inoche.2025.115145

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