Oxidative Dehydrogenation of Ethane in the Presence of СО2 on CrOx/SiO2 Catalysts

Gubkin Russian State University of Oil and Gas (National Research University),Tedeeva M. A., Kartavova K. E., Aimaletdinov T. R., Zelinskii Institute of Organic Chemistry, Russian Academy of Sciences, Zelinskii Institute of Organic Chemistry, Russian Academy of Sciences

Russian Journal of Physical Chemistry A（2021）

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摘要

The oxidative dehydrogenation of ethane in the presence of CO2 was studied on SiO2-supported chromium oxide catalytic systems with different texture characteristics. The highest activity was displayed by the samples deposited on SiO2 with a high specific surface area. On the 5%CrОх/SiO2 catalyst, the ethylene selectivity was ~80% at ~50% conversion of ethane. The results of our physicochemical analysis showed that the catalyst activity depended on the content of Cr(VI) particles, whose formation depended on the nature of support.

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关键词

oxidative dehydrogenation of ethane,ethylene,silica gel,chromium oxides,chromium oxide catalysts,carbon dioxide,XRD,UV–Vis diffuse reflectance spectroscopy

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