High-entropy intermetallics on ceria as efficient catalysts for the oxidative dehydrogenation of propane using CO<sub>2</sub>.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 36038619.
- Also identified by DOI 10.1038/s41467-022-32842-8 and PMC identifier 9424294.
- Licence recorded as CC BY.
- The licence permits redistribution, so the abstract is shown in full and the full text is available from the publisher.
Abstract
The oxidative dehydrogenation of propane using CO<sub>2</sub> (CO<sub>2</sub>-ODP) is a promising technique for high-yield propylene production and CO<sub>2</sub> utilization. The development of a highly efficient catalyst for CO<sub>2</sub>-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<sub>2</sub> with a PtSn intermetallic structure exhibits a considerably higher catalytic activity, C<sub>3</sub>H<sub>6</sub> selectivity, long-term stability, and CO<sub>2</sub> 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<sub>2</sub> activation ability, thermal stability, and regenerable ability. The results obtained in this study can promote carbon-neutralization of industrial processes for light alkane conversion.