The oxidative dehydrogenation of propane using CO₂ (CO₂-ODP) is a promising technique for high-yield propylene production and CO₂ utilization. The development of a highly efficient catalyst for CO₂-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 CeO₂ with a PtSn intermetallic structure exhibits a considerably higher catalytic activity, C₃H₆ selectivity, long-term stability, and CO₂ 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, CO₂ activation ability, thermal stability, and regenerable ability. The results obtained in this study can promote carbon-neutralization of industrial processes for light alkane conversion.

使用CO ₂ (CO ₂ -ODP)进行丙烷氧化脱氢是高产丙烯生产和CO ₂利用的一种有前景的技术。开发CO ₂ -ODP高效催化剂对化学工业以及净零排放具有极大的兴趣和好处。在这里，我们报告了一种基于高熵金属间化合物的独特催化剂材料和设计概念，用于这种具有挑战性的化学反应。具有PtSn金属间结构的CeO ₂负载的六元(PtCoNi)(SnInGa)催化剂在600℃下表现出明显更高的催化活性、C ₃ H ₆选择性、长期稳定性和CO ₂利用率。分别通过Co/Ni和In/Ga对Pt和Sn位点进行多金属化，大大提高了丙烯选择性、CO ₂活化能力、热稳定性和可再生能力。本研究获得的结果可以促进轻质烷烃转化工业过程的碳中和。