CO Oxidation at Low Temperatures over the Au Cluster Supported on Crystalline Silicotitanate.

ABSTRACT: Crystalline silicotitanate (CST) with a sitinakite structure has attracted considerable attention as an ion exchanger because of its anionic surface owing to SiO₄ tetrahedral and TiO₆ octahedral linked structures. In particular, the anionic surface of CST is advantageous in immobilizing single Au atoms derived from a cationic precursor such as Au(en)₂Cl₃ (en = ethylenediamine). In this study, a Au/CST catalyst was prepared and evaluated for CO oxidation. The transmission electron microscopy and X-ray photoelectron spectroscopy results suggest that Au single atoms and clusters (Au^δ+, 0 < δ < 1) were supported on Na⁺-CST particles. The 1.0 wt % Au/CST catalyst yielded high catalytic activity for CO oxidation, where 50% CO oxid

SUBMITTER: Muraoka M 

PROVIDER: S-EPMC11465248 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature