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Facile synthesis of precious-metal single-site catalysts using organic solvents

Sun, Xi, Dawson, Simon R., Parmentier, Tanja E., Malta, Grazia, Davies, Thomas E., He, Qian, Lu, Li, Morgan, David J., Carthey, Nicholas, Johnston, Peter, Kondrat, Simon A., Freakley, Simon J., Kiely, Christopher J. and Hutchings, Graham J. 2020. Facile synthesis of precious-metal single-site catalysts using organic solvents. Nature Chemistry 12 , pp. 560-567. 10.1038/s41557-020-0446-z
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Abstract

Single-site catalysts can demonstrate high activity and selectivity in many catalytic reactions. The synthesis of these materials by impregnation from strongly oxidizing aqueous solutions or pH-controlled deposition often leads to low metal loadings or a range of metal species. Here, we demonstrate that simple impregnation of the metal precursors onto activated carbon from a low-boiling-point, low-polarity solvent, such as acetone, results in catalysts with an atomic dispersion of cationic metal species. We show the generality of this method by producing single-site Au, Pd, Ru and Pt catalysts supported on carbon in a facile manner. Single-site Au/C catalysts have previously been validated commercially to produce vinyl chloride, and here we show that this facile synthesis method can produce effective catalysts for acetylene hydrochlorination in the absence of the highly oxidizing acidic solvents previously used.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Chemistry
Cardiff Catalysis Institute (CCI)
Publisher: Nature Publishing Group
ISSN: 1755-4330
Funders: China Scholarship Council
Date of First Compliant Deposit: 16 April 2020
Date of Acceptance: 20 February 2020
Last Modified: 02 Jul 2020 20:00
URI: http://orca-mwe.cf.ac.uk/id/eprint/131048

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