Highly dispersed Pd-based pseudo-single atoms in zeolites for hydrogen generation and pollutant disposal.

ABSTRACT: Atomically dispersed metal catalysts with excellent activity and stability are highly desired in heterogeneous catalysis. Herein, we synthesized zeolite-encaged Pd-based pseudo-single atoms via a facile and energy-efficient ligand-protected direct H₂ reduction method. C_s-corrected scanning transmission electron microscopy, extended X-ray absorption, and pair distribution function measurements reveal that the metal species are close to atomic-level dispersion and completely confined within the intersectional channels of silicalite-1 (S-1) zeolite with the MFI framework. The Pd@S-1-H exhibits excellent activity and stability in methane combustion reactions with a complete combustion temperature of 390 °C, and no deactivation is observed even after 100 h on stream

SUBMITTER: Zhang K 

PROVIDER: S-EPMC10732228 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature