High-entropy intermetallics on ceria as efficient catalysts for the oxidative dehydrogenation of propane using CO2
Feilong Xing, Jiamin Ma, Ken‐ichi Shimizu, Shinya Furukawa
Abstract
Abstract The oxidative dehydrogenation of propane using CO 2 (CO 2 -ODP) is a promising technique for high-yield propylene production and CO 2 utilization. The development of a highly efficient catalyst for CO 2 -ODP is of great interest and benefit to the chemical industry as well as net zero emissions. Here, we report a unique catalyst material and design concept based on high-entropy intermetallics for this challenging chemistry. A senary (PtCoNi)(SnInGa) catalyst supported on CeO 2 with a PtSn intermetallic structure exhibits a considerably higher catalytic activity, C 3 H 6 selectivity, long-term stability, and CO 2 utilization efficiency at 600 °C than previously reported. Multi-metallization of the Pt and Sn sites by Co/Ni and In/Ga, respectively, greatly enhances propylene selectivity, CO 2 activation ability, thermal stability, and regenerable ability. The results obtained in this study can promote carbon-neutralization of industrial processes for light alkane conversion.