The catalytic conversion of ethane into ethylene via the oxidative dehydrogenation (ODH) pathway in the presence of CO2 as a soft oxidant is of great importance because of the growing demand for light olefin production in an efficient and selective way. Molybdenum carbide is among the potential candidates for C2H6 ODH reaction for its capability of C-H dissociation as well as CO2 activation. However, it is still difficult to inhibit the undesirable C-C bond scissoring activity on Mo2C which leads to the side reactions of ethane dry reforming and hydrolysis. We discovered that the C-C dissociation is able to be suppressed by surface oxygen modification and the selectivity and yield of ethylene are subsequently promoted. Bimetallic promoting strategy was further developed to enhance the stability of catalyst and reduce the induction period.

Promoting the ethylene yield in ethane oxidative dehydrogenation reaction over Mo2C catalyst via oxygen modification

255th National Meeting (2018)

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