Nanoparticles as an antidote for poisoned gold single-atom catalysts in sustainable propylene epoxidation.

ABSTRACT: The development of sustainable and anti-poisoning single-atom catalysts (SACs) is essential for advancing their research from laboratory to industry. Here, we present a proof-of-concept study on the poisoning of Au SACs, and the antidote of Au nanoparticles (NPs), with trace addition shown to reinforce and sustain propylene epoxidation. Multiple characterizations, kinetics investigations, and multiscale simulations reveal that Au SACs display remarkable epoxidation activity at a low propylene coverage, but become poisoned at higher coverages. Interestingly, Au NPs can synergistically cooperate with Au SACs by providing distinct active sites required for H₂/O₂ and C₃H₆ activations, as well as hydroperoxyl radical to restore poisoned SACs. The diff

SUBMITTER: Wang Q 

PROVIDER: S-EPMC11021464 | biostudies-literature | 2024 Apr

REPOSITORIES: biostudies-literature