Carbon Dioxide Reduction with Hydrogen on Fe, Co Supported Alumina and Carbon Catalysts under Supercritical Conditions

Carbon Dioxide Reduction with Hydrogen on Fe, Co Supported Alumina and Carbon Catalysts under Supercritical Conditions Научная публикация

Журнал

Molecules
ISSN: 1420-3049

Вых. Данные

Год: 2021, Том: 26, Номер: 10, Номер статьи : 2883, Страниц : DOI: 10.3390/molecules26102883

Авторы

Bogdan Viktor I. ^1,2 , Koklin Aleksey E. ² , Kustov Alexander L. ^1,2 , Pokusaeva Yana A. ² , Bogdan Tatiana V. ^1,2 , Kustov Leonid M. ^1,2

Организации

1	Chemistry Department, Lomonosov Moscow State University, Leninskie Gory, 1, Bldg. 3, 119992 Moscow, Russia
2	N.D. Zelinsky Institute of Organic Chemistry, Leninsky Prospect, 47, 119991 Moscow, Russia

Reduction of CO2 with hydrogen into CO was studied for the first time on alumina-supported Co and Fe catalysts under supercritical conditions with the goal to produce either CO or CH4 as the target products. The extremely high selectivity towards methanation close to 100% was found for the Co/Al2O3 catalyst, whereas the Fe/Al2O3 system demonstrates a predominance of hydrogenation to CO with noticeable formation of ethane (up to 15%). The space–time yield can be increased by an order of magnitude by using the supercritical conditions as compared to the gas-phase reactions. Differences in the crystallographic phase features of Fe-containing catalysts cause the reverse water gas shift reaction to form carbon monoxide, whereas the reduced iron phases initiate the Fischer–Tropsch reaction to produce a mixture of hydrocarbons. Direct methanation occurs selectively on Co catalysts. No methanol formation was observed on the studied Fe- and Co-containing catalysts.

Bogdan V.I. , Koklin A.E. , Kustov A.L. , Pokusaeva Y.A. , Bogdan T.V. , Kustov L.M.
Carbon Dioxide Reduction with Hydrogen on Fe, Co Supported Alumina and Carbon Catalysts under Supercritical Conditions
Molecules. 2021. V.26. N10. 2883 . DOI: 10.3390/molecules26102883 WOS Scopus OpenAlex

≡ Web of science:	WOS:000655048300001
≡ Scopus:	2-s2.0-85106563183
≡ OpenAlex:	W3163112638