Malta, G;
Kondrat, SA;
Freakley, SJ;
Davies, CJ;
Lu, L;
Dawson, S;
Thetford, A;
... Hutchings, GJ; + view all
(2017)
Identification of single-site gold catalysis in acetylene hydrochlorination.
Science
, 355
(6332)
pp. 1399-1403.
10.1126/science.aal3439.
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Abstract
There remains considerable debate over the active form of gold under operating conditions of a recently validated gold catalyst for acetylene hydrochlorination. We have performed an in situ x-ray absorption fine structure study of gold/carbon (Au/C) catalysts under acetylene hydrochlorination reaction conditions and show that highly active catalysts comprise single-site cationic Au entities whose activity correlates with the ratio of Au(I):Au(III) present. We demonstrate that these Au/C catalysts are supported analogs of single-site homogeneous Au catalysts and propose a mechanism, supported by computational modeling, based on a redox couple of Au(I)-Au(III) species.
| Type: | Article |
|---|---|
| Title: | Identification of single-site gold catalysis in acetylene hydrochlorination |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1126/science.aal3439 |
| Publisher version: | https://doi.org/10.1126/science.aal3439 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher's terms and conditions. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10115570 |
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