Jump to main content
Jump to site search


Achieving efficient and robust catalytic reforming on dual-sites of Cu species

Author affiliations

Abstract

Catalytic reforming provides a practical technique for on-board hydrogen production in fuel cell applications. The high energy density, easy transportation and non-toxicity of biomass-derived dimethyl ether (bio-DME) offer potential to replace methanol for on-board steam reforming (SR). Presently, the reaction mechanism over conventional Cu-based SR catalysts remains elusive, limiting the rational design of highly efficient reforming systems. Herein, we build a catalytic system for bio-DME SR with dual-sites of Cu species, i.e., Cu+ and Cu0 sites, and achieve a record-high H2 production rate of 1145 mol kgcat−1 h−1. Via regulating the ratios of the dual-sites of Cu, we clearly describe molecular understandings on SR. And we discover that the substantially boosted activity is induced by a new Cu+-determined reaction path substituting the conventional Cu0-determined path. Intrinsically, Cu2O can act as a physical spacer and hydroxyl consumer to suppress the aggregation of metallic Cu species in SR. Due to the unique structure of metallic Cu surrounded by Cu2O, the catalyst exhibits robust catalytic performance even after severe thermal treatment. These findings open a new avenue for designing efficient catalytic reforming systems with commercial potential.

Graphical abstract: Achieving efficient and robust catalytic reforming on dual-sites of Cu species

Back to tab navigation

Supplementary files

Publication details

The article was received on 02 Jan 2019, accepted on 16 Jan 2019 and first published on 23 Jan 2019


Article type: Edge Article
DOI: 10.1039/C9SC00015A
Citation: Chem. Sci., 2019, Advance Article
  • Open access: Creative Commons BY-NC license
  •   Request permissions

    Achieving efficient and robust catalytic reforming on dual-sites of Cu species

    K. Ma, Y. Tian, Z. Zhao, Q. Cheng, T. Ding, J. Zhang, L. Zheng, Z. Jiang, T. Abe, N. Tsubaki, J. Gong and X. Li, Chem. Sci., 2019, Advance Article , DOI: 10.1039/C9SC00015A

    This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. Material from this article can be used in other publications provided that the correct acknowledgement is given with the reproduced material and it is not used for commercial purposes.

    Reproduced material should be attributed as follows:

    • For reproduction of material from NJC:
      [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the Centre National de la Recherche Scientifique (CNRS) and the RSC.
    • For reproduction of material from PCCP:
      [Original citation] - Published by the PCCP Owner Societies.
    • For reproduction of material from PPS:
      [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the European Society for Photobiology, the European Photochemistry Association, and RSC.
    • For reproduction of material from all other RSC journals:
      [Original citation] - Published by The Royal Society of Chemistry.

    Information about reproducing material from RSC articles with different licences is available on our Permission Requests page.

Search articles by author

Spotlight

Advertisements