Cardiff University | Prifysgol Caerdydd ORCA
Online Research @ Cardiff 
WelshClear Cookie - decide language by browser settings

Identification of single-site gold catalysis in acetylene hydrochlorination

Malta, Grazia, Kondrat, Simon A., Freakley, Simon J., Davies, Catherine J., Lu, Li, Dawson, Simon, Thetford, Adam, Gibson, Emma K., Morgan, David J., Jones, Wilm, Wells, Peter P., Johnston, Peter, Catlow, C. Richard A. ORCID: https://orcid.org/0000-0002-1341-1541, Kiely, Christopher J. ORCID: https://orcid.org/0000-0001-5412-0970 and Hutchings, Graham J. ORCID: https://orcid.org/0000-0001-8885-1560 2017. Identification of single-site gold catalysis in acetylene hydrochlorination. Science 355 (6332) , pp. 1399-1403. 10.1126/science.aal3439

[thumbnail of aal3439_ArticleContent_accepted.pdf]
Preview
PDF - Accepted Post-Print Version
Download (872kB) | Preview
[thumbnail of aal3439_SupplementalMaterial_accepted.pdf]
Preview
PDF - Supplemental Material
Download (2MB) | Preview

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.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Advanced Research Computing @ Cardiff (ARCCA)
Chemistry
Cardiff Catalysis Institute (CCI)
Subjects: Q Science > QD Chemistry
Publisher: American Association for the Advancement of Science
ISSN: 0036-8075
Date of First Compliant Deposit: 31 March 2017
Date of Acceptance: 7 March 2017
Last Modified: 27 Mar 2024 17:36
URI: https://orca.cardiff.ac.uk/id/eprint/99573

Citation Data

Cited 296 times in Scopus. View in Scopus. Powered By Scopus® Data

Actions (repository staff only)

Edit Item Edit Item

Downloads

Downloads per month over past year

View more statistics