Influence of Hydrogen and Oxygen Impurities on Platinum-Catalyzed Acetylene Hydrochlorination.

ABSTRACT: Platinum (Pt) nanostructuring is a powerful strategy for tuning adsorption properties and reactivity in vinyl chloride monomer (VCM) synthesis. To ensure relevance beyond ideal conditions, catalyst performance must be evaluated under more realistic acetylene (C₂H₂) feeds containing unavoidable impurities such as oxygen (O₂) and hydrogen (H₂), which can impair the performance through competitive adsorption and active site modification. Herein, we study the behavior of Pt single atom (SA) under multicomponent feeds containing H₂ and O₂. Pt SA maintains high activity in the presence of H₂, showing full VCM selectivity and no hydrogenation products, owing to their high affinity for HCl. In contrast, cofeeding O_2<

SUBMITTER: Alkhoori AA 

PROVIDER: S-EPMC12284889 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature