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A new class of Cu/ZnO catalysts derived from zincian georgeite precursors prepared by co-precipitation

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posted on 07.02.2018 by Paul J. Smith, Simon Kondrat, Philip A. Chater, Benjamin R. Yeo, Greg M. Shaw, Li Lu, Jonathan K. Bartley, Stuart H. Taylor, Michael S. Spencer, Christopher J. Kiely, Gordon J. Kelly, Colin W. Park, Graham J. Hutchings
Zincian georgeite, an amorphous copper-zinc hydroxycarbonate, has been prepared by co-precipitation using acetate salts and ammonium carbonate. Incorporation of zinc into the georgeite phase and mild ageing conditio ns inhibits crystallisation into zincian malachite or aurichalcite. This zincian georgeite precursor was used to prepare a Cu/ZnO catalyst, which exhibits a superior performance to a zincian malachite derived catalyst for methanol synthesis and the low temperature water-gas shift (LTS) reaction. Furthermore, the enhanced LTS activity and stability in comparison to that of a commercial Cu/ZnO/Al 2 O 3 catalyst, indicates that the addition of alumina as a stabiliser may not be required for the zincian georgeite derived Cu/ZnO catalyst. The enhanced performance is partly attributed to the exclusion of alkali metals from the synthesis procedure, which are known to act as catalyst poisons. The effect of residual sodium on the microstructural properties of the catalyst precursor was investigated further from preparations using sodium carbonate.

Funding

UK Catalysis Hub, Engineering and Physical Sciences Research Council (grants EP/K014714/1, EP/K014714/1, EP/K014668/1, EP/K014706/1, EP/I019693/1), and Johnson Matthey.

History

School

  • Science

Department

  • Chemistry

Published in

Chemical Science

Volume

8

Issue

3

Pages

2436 - 2447

Citation

SMITH, P.J. ... et al, 2017. A new class of Cu/ZnO catalysts derived from zincian georgeite precursors prepared by co-precipitation. Chemical Science, 8 (3), pp. 2436-2447.

Publisher

© Royal Society of Chemistry

Version

VoR (Version of Record)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial 3.0 Unported (CC BY-NC 3.0) licence. Full details of this licence are available at: http://creativecommons.org/licenses/by-nc/3.0/

Acceptance date

29/12/2016

Publication date

2017

Notes

This is an Open Access Article. It is published by the Royal Society of Chemistry under the Creative Commons Attribution-NonCommercial 3.0 Unported Licence (CC BY-NC). Full details of this licence are available at: http://creativecommons.org/licenses/by-nc/3.0/

ISSN

2041-6520

eISSN

2041-6539

Language

en

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