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Atomic NbOx overlayers on palladium nanoparticles enhance selective hydrodehydroxylation

  • Ye Liu
  • , Bin Zhang
  • , Jing Xia
  • , Mark Douthwaite
  • , Minghua Dong
  • , Haiyang Yuan
  • , Xiaomeng Cheng
  • , Sen Luan
  • , Yuxuan Wu
  • , Zhijuan Zhao
  • , Jing Tai
  • , Lihua Chen
  • , Bao Lian Su
  • , Buxing Han
  • , Huizhen Liu

Research output: Contribution to journalArticlepeer-review

Abstract

The implementation of strong metal–support interactions (SMSI) is an effective design strategy that can be used to control reaction selectivity. In this study, we present evidence for the existence of SMSI between Nb2O5 and Pd, which results in the formation of an atomic thick layer of NbOx that coats the surface of Pd nanoparticles. The NbOx layer was found to profoundly affect the catalytic hydrodehydroxylation of 5-(hydroxymethyl)furfural (HMF) to 5-methylfurfural (MF). Under optimal reaction conditions, it significantly increased MF selectivity (from 6.4% to 81.0%) compared to an analogous control sample at iso-conversion. Through probing these two materials, the origin of this enhancement was attributed to the blocking of active sites responsible for the (undesirable) hydrogenation of C = O moieties. Importantly, however, the NbOx overlayer did not appear to influence the ability of the material to activate H2 and preferentially dissociate C – OH on Nb2O5, which are key steps in the hydrodehydroxylation mechanism.
Original languageEnglish
Article number147687
JournalChemical Engineering Journal
Volume479
DOIs
Publication statusPublished - 1 Jan 2024

Funding

This work received financial support from the National Key Research and Development Program of China ( 2022YFA1504901 ), the National Natural Science Foundation of China (22293020, 22293022, 22179132, 22121002, 22293012, 22302209), and the Junior Fellowship of Beijing National Laboratory of Molecular Science (2021BMS20059).

FundersFunder number
National Natural Science Foundation of China22302209, 22121002, 22293012, 22293022, 22179132, 22293020
National Natural Science Foundation of China
National Key Research and Development Program of China2022YFA1504901
National Key Research and Development Program of China
Beijing National Laboratory for Molecular Sciences2021BMS20059
Beijing National Laboratory for Molecular Sciences

    UN SDGs

    This output contributes to the following UN Sustainable Development Goals (SDGs)

    1. SDG 9 - Industry, Innovation, and Infrastructure
      SDG 9 Industry, Innovation, and Infrastructure
    2. SDG 12 - Responsible Consumption and Production
      SDG 12 Responsible Consumption and Production

    Keywords

    • Biomass conversion
    • Metal encapsulation
    • Nb O catalysts 2 5
    • Selective hydrogenolysis
    • Strong metal–support interaction (SMSI)
    • Nb O catalysts

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