Low-Temperature Nonoxidative Dehydrogenation of Propane over Sn-promoted Mo-Y Zeolite: Catalytic performance and nature of the active sites

Abstract

Owing to its higher value and ever-growing market, the production of light olefins is more attractive for many refineries. Among the existing routes, on-purpose dehydrogenation technologies seek special attention for the production of light olefins. Here we report a Mo-based bi-metallic catalyst exhibiting highly selective, active and stable for the direct dehydrogenation of propane to propylene. A comprehensive surface study of the MoSn/Y catalyst has been acquired to understand the interatomic interactions between metals. Extended X-ray absorption fine structure analysis suggested the Mo-O species is highly dispersed along with Sn-O. The structure-yield relationship illustrates that the Pt does not affect the catalytic performance when compared to Pt free system. We achieved a 40.94% propylene yield over MoSn/Y catalyst with the gradual coke deposition rate of 5.4x10-3 gcoke.gcat-1.h−1.