Reactant-Induced Structural Evolution of Pt Catalysts Confined in Zeolite.

ABSTRACT: Reactant-induced structural evolutions of heterogeneous metal catalysts are frequently observed in numerous catalytic systems, which can be associated with the formation or deactivation of active sites. In this work, we will show the structural transformation of subnanometer Pt clusters in pure-silica MFI zeolite structure in the presence of CO, O₂, and/or H₂O and the catalytic consequences of the Pt-zeolite materials derived from various treatment conditions. By applying the appropriate pretreatment under a reactant atmosphere, we can precisely modulate the size distribution of Pt species spanning from single Pt atoms to small Pt nanoparticles (1-5 nm) in the zeolite matrix, resulting in the desirably active and stable Pt species for CO oxidation. We also show the in

SUBMITTER: Li X 

PROVIDER: S-EPMC10900205 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature