Redispersion strategy for high-loading carbon-supported metal catalysts with controlled nuclearity.

ABSTRACT: Supported low-nuclearity metal catalysts integrating single atoms or small clusters have emerged as promising materials for diverse applications. While sophisticated synthetic methods provide a high level of nuclearity control in the subnanometre regime, these routes do not fulfil the requirements for translation into industrial practice of (i) effectiveness for high metal contents and (ii) facile scalability. Herein, we present a gas-phase redispersion strategy consisting of sequential C₂H₂ and HCl treatments to gradually disperse Ru, Rh and Ir nanoparticles supported on commercial activated carbon with metal content up to 10 wt% and initial average sizes of ≈ 1 nm into small clusters and eventually single atoms. Avoidance of nanoparticle surface overchlorination, wh

SUBMITTER: Giulimondi V 

PROVIDER: S-EPMC8922557 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature