Chinese Journal of Catalysis ›› 2025, Vol. 74: 71-81.DOI: 10.1016/S1872-2067(25)64741-3

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Accurate restricted transition-state shape selective hydrogenation of furfural over zeolite confined Cu catalyst

Wanying Lianga, Guangyue Xub,c, Yao Fua,*()   

  1. aKey Laboratory of Precision and Intelligent Chemistry, CAS Key Laboratory of Urban Pollutant Conversion, Anhui Province Key Laboratory of Biomass Chemistry, University of Science and Technology of China, Hefei 230026, Anhui, China
    bBeijing Nation Power Group Co., Ltd., Beijing 102299, China
    cZhejiang Kezhuo Environmental Protection Technology Co., Ltd., Shangyu 212300, Zhejiang, China
  • Received:2025-03-10 Accepted:2025-04-28 Online:2025-07-18 Published:2025-07-20
  • Contact: *E-mail: fuyao@ustc.edu.cn (Y. Fu).
  • Supported by:
    National Natural Science Foundation of China(22293011);National Natural Science Foundation of China(T2341001);Anhui Provincial Major Science and Technology Project(2022e03020005);New Cornerstone Science Foundation through the XPLORER PRIZE

Abstract:

Transition-state shape selectivity plays a crucial role in catalytic systems where reactants and products exhibit comparable molecular dimensions, as it restricts the accessible configuration space of reaction intermediates. Herein, we designed a Cu@MFI catalyst by encapsulating Cu active sites within the well-defined micropores of MFI zeolite through a pore confinement strategy. This architecture preserves the zeolite framework integrity while maintaining unhindered internal mass transport, thereby enabling precise spatial control over transition-state configurations. Employing furfural hydrogenation as a probe reaction, the metal-zeolite synergy in Cu@MFI endowed the catalyst with exceptional activity (100% furfural conversion) and quantitative selectivity (100% furfuryl alcohol) at 70 °C, sustained across a broad temperature window. Mechanistic studies reveal that the transition-state shape selectivity effectively prevented H2O interaction with the furan ring, offering valuable insights for other reaction systems seeking to exploit shape selectivity for specific transformations.

Key words: Biomass, Cu@MFI catalyst, Transition-state shape selectivity, Furfural hydrogenation, Metal-zeolite synergy