European Journal of Inorganic Chemistry
European Journal of Inorganic Chemistry
3 years ago

Carbon Dioxide as Feedstock in Selective Oxidation of Propane

Jungshik Kang, Vadim Guliants, Andrew Czaja
Carbon dioxide is a promising nonconventional oxidant for catalytic dehydrogenation of lower alkanes to olefins. Lower catalytic activity of CO2 as compared to oxygen that is typically used in oxidative dehydrogenation (ODH) also means that more reactive olefins are less likely to undergo undesirable combustion in the presence of CO2. Supported vanadia catalysts synthesized by incipient wetness impregnation of silica support, and by varying the surface coverage of VOx species using sodium on the silica surface, the nature of the catalyst was investigated. The promotion with Na cations significantly improved the dispersion of surface VOx species and resulted in the formation of surface Na-metavanadate or another reduced V3+/V4+ phase, which lacked catalytic activity in propane ODH in the presence of CO2.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/ejic.201701049

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