Non-Thermal Plasma Activation of Gold-Based Catalysts for Low-Temperature Water-Gas Shift Catalysis

Cristina E. Stere, James A Anderson, Sarayute Chansai, Juan Jose Delgado, Alexandre Goguet, Willam G. Graham, C. Hardacre, S. F. Rebecca Taylor, Xin Tu, Ziyun Wang, Hui Yang

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Abstract

Non-thermal plasma activation has been used to enable low-temperature water-gas shift over a Au/CeZrO4 catalyst. The activity obtained was comparable with that attained by heating the catalyst to 180 °C providing an opportunity for the hydrogen production to be obtained under conditions where the thermodynamic limitations are minimal. Using in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS), structural changes associated with the gold nanoparticles in the catalyst have been observed which are not found under thermal activation indicating a weakening of the Au-CO bond and a change in the mechanism of deactivation.

Original languageEnglish
Pages (from-to)5579-5583
Number of pages5
JournalAngewandte Chemie International Edition
Volume56
Issue number20
Early online date12 Apr 2017
DOIs
Publication statusPublished - 8 May 2017

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Keywords

  • carbon monoxide
  • heterogeneous catalysis
  • plasma catalysis
  • thermodynamic equilibrium
  • water–gas shift reaction

Cite this

Stere, C. E., Anderson, J. A., Chansai, S., Delgado, J. J., Goguet, A., Graham, W. G., Hardacre, C., Taylor, S. F. R., Tu, X., Wang, Z., & Yang, H. (2017). Non-Thermal Plasma Activation of Gold-Based Catalysts for Low-Temperature Water-Gas Shift Catalysis. Angewandte Chemie International Edition, 56(20), 5579-5583. https://doi.org/10.1002/anie.201612370