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Issue 3, 2017
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A new class of Cu/ZnO catalysts derived from zincian georgeite precursors prepared by co-precipitation

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Abstract

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 conditions 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/Al2O3 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.

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

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Supplementary files

Article information


Submitted
14 Sep 2016
Accepted
29 Dec 2016
First published
03 Jan 2017

This article is Open Access
All publication charges for this article have been paid for by the Royal Society of Chemistry

Chem. Sci., 2017,8, 2436-2447
Article type
Edge Article

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

P. J. Smith, S. A. Kondrat, P. A. Chater, B. R. Yeo, G. M. Shaw, L. Lu, J. K. Bartley, S. H. Taylor, M. S. Spencer, C. J. Kiely, G. J. Kelly, C. W. Park and G. J. Hutchings, Chem. Sci., 2017, 8, 2436
DOI: 10.1039/C6SC04130B

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