2134/33205
Grazia Malta
Grazia
Malta
Simon Kondrat
Simon
Kondrat
Simon J. Freakley
Simon J.
Freakley
Catherine J. Davies
Catherine J.
Davies
Li Lu
Li
Lu
Simon R. Dawson
Simon R.
Dawson
Adam Thetford
Adam
Thetford
Emma K. Gibson
Emma K.
Gibson
David J. Morgan
David J.
Morgan
Wilm Jones
Wilm
Jones
Peter P. Wells
Peter P.
Wells
Peter Johnston
Peter
Johnston
C. Richard A. Catlow
C. Richard A.
Catlow
Christopher J. Kiely
Christopher J.
Kiely
Graham J. Hutchings
Graham J.
Hutchings
Identification of single-site gold catalysis in acetylene hydrochlorination
Loughborough University
2018
untagged
Chemical Sciences not elsewhere classified
2018-05-30 13:27:32
Journal contribution
https://repository.lboro.ac.uk/articles/journal_contribution/Identification_of_single-site_gold_catalysis_in_acetylene_hydrochlorination/9390182
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.