Direct propylene epoxidation via water activation over Pd-Pt electrocatalysts
Massachusetts Institute of Technology · California Institute of Technology
Abstract
Direct electrochemical propylene epoxidation by means of water-oxidation intermediates presents a sustainable alternative to existing routes that involve hazardous chlorine or peroxide reagents. We report an oxidized palladium-platinum alloy catalyst (PdPtO x /C), which reaches a Faradaic efficiency of 66 ± 5% toward propylene epoxidation at 50 milliamperes per square centimeter at ambient temperature and pressure. Embedding platinum into the palladium oxide crystal structure stabilized oxidized platinum species, resulting in improved catalyst performance. The reaction kinetics suggest that epoxidation on PdPtO x /C proceeds through electrophilic attack by metal-bound peroxo intermediates. This work…
Citation impact
- FWCI
- 12.70
- Percentile
- 100%
- References
- 36
Authors
6Topics & keywords
- Chemistry
- Catalysis
- Organic chemistry