Strengthening the Metal–Acid Interactions by Using CeO₂ as Regulators of Precisely Placing Pt Species in ZSM‐5 for Furfural Hydrogenation

Abstract

Understanding the synergism between metal site and acid site is of great significance in boosting the efficiency of bi‐functional catalysts in many heterogeneous reactions, particularly in biomass upgrading. Herein, we report a “confined auto‐redox” strategy to fix CeO2‐anchored Pt atoms on the inner wall of a ZSM‐5 cage, achieving the target of finely controlling the placements of the two active sites. Compared with the conventional surface‐supported counterpart, the encapsulated Pt/CeO2@ZSM‐5 catalyst possesses remarkably‐improved activity and selectivity, which can convert > 99% furfural into cyclopentanone with 97.2% selectivity in 6 hours at 160 °C. Besides the excellent catalytic performance, the ordered metal‐acid distribution also makes such kind of catalyst become an ideal research subject for metal‐acid interactions. The following mechanization investigation reveals that the enhancement is strongly related to the unique encapsulation structure, which promotes the migration of the reactants over different active sites, thereby contributing to the tandem reaction.This article is protected by copyright. All rights reserved