The effects of secondary oxides on copper-based catalysts for green methanol synthesis

Hayward, James S., Smith, Paul J., Kondrat, Simon A., Bowker, Michael ORCID: https://orcid.org/0000-0001-5075-1089 and Hutchings, Graham J. ORCID: https://orcid.org/0000-0001-8885-1560 2017. The effects of secondary oxides on copper-based catalysts for green methanol synthesis. ChemCatChem 9 (9) , pp. 1655-1662. 10.1002/cctc.201601692

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Abstract

Catalysts for methanol synthesis from CO2 and H2 have been produced by two main methods: co-precipitation and supercritical anti-solvent (SAS) precipitation. These two methods are compared, along with the behaviour of copper supported on Zn, Mg, Mn, and Ce oxides. Although the SAS method produces initially active material with high Cu specific surface area, they appear to be unstable during reaction losing significant amounts of surface area and hence activity. The CuZn catalysts prepared by co-precipitation, however, showed much greater thermal and reactive stability than the other materials. There appeared to be the usual near-linear dependence of activity upon Cu specific area, though the initial performance relationship was different from that post-reaction, after some loss of surface area. The formation of the malachite precursor, as reported before, is important for good activity and stability, whereas if copper oxides are formed during the synthesis and ageing process, then a detrimental effect on these properties is seen.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Chemistry Cardiff Catalysis Institute (CCI)
Subjects:	Q Science > QD Chemistry
Uncontrolled Keywords:	CO2; copper; methanol synthesis; oxides; supercritical liquids
Publisher:	Wiley
ISSN:	1867-3880
Funders:	EPSRC and UK Catalysis Hub
Date of First Compliant Deposit:	8 May 2017
Date of Acceptance:	6 April 2017
Last Modified:	01 Jun 2023 15:45
URI:	https://orca.cardiff.ac.uk/id/eprint/100402

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