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

doi:10.1002/anie.201612370

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

Engineering

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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 language	English
Pages (from-to)	5579-5583
Number of pages	5
Journal	Angewandte Chemie International Edition
Volume	56
Issue number	20
Early online date	12 Apr 2017
DOIs	https://doi.org/10.1002/anie.201612370
Publication status	Published - 8 May 2017

Bibliographical note

Acknowledgements
The UK Catalysis Hub is kindly thanked for resources and support provided via our membership of the UK Catalysis Hub Consortium and funded by EPSRC (Portfolio Grants EP/K014706/2, EP/K014668/1, EP/K014854/1, EP/K014714/1, and EP/I019693/1). Open access data can be found via the University of Manchester research portal. We are grateful to Helen Daly (Queen's University Belfast) for discussion, to Fabio de Rosa (Queen's University Belfast) for the thermodynamic equilibrium calculations (obtained using the Convergence tool of Aspen Plus 8.0) and to Emma Gibson (Harwell Research Complex) for the BET measurements. JJ Delgado is grateful to Ramon y Cajal program and the Ce-NanoSurPhases project grant from MINECO.

Keywords

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

UN SDGs

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

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Accepted ManuscriptAccepted author manuscript, 7.66 MBLicence: Unspecified
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Non-Thermal Plasma Activation of Gold-Based Catalysts for Low-Temperature Water–Gas Shift Catalysis
Copyright 2017 The Authors. Published by Wiley-VCH Verlag GmbH & Co. KGaA. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. http://creativecommons.org/licenses/by/4.0/
Final published version, 788 KBLicence: CC BY

Cite this

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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.",

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AU - Goguet, Alexandre

AU - Graham, Willam G.

AU - Hardacre, C.

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AU - Tu, Xin

AU - Wang, Ziyun

AU - Yang, Hui

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N2 - 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.

AB - 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.

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KW - thermodynamic equilibrium

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

Abstract

Bibliographical note

Keywords

UN SDGs

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