Sulfur promotion in Au/C catalyzed acetylene hydrochlorination

Dawson, Simon R., Pattisson, Samuel, Malta, Grazia, Dummer, Nicholas F. ORCID: https://orcid.org/0000-0002-0946-6304, Smith, Louise R., Lazaridou, Anna, Allen, Christopher S., Davies, Thomas E., Freakley, Simon J., Kondrat, Simon A, Kiely, Christopher J. ORCID: https://orcid.org/0000-0001-5412-0970, Johnston, Peter and Hutchings, Graham J. ORCID: https://orcid.org/0000-0001-8885-1560 2021. Sulfur promotion in Au/C catalyzed acetylene hydrochlorination. Small 17 (16) , 2007221. 10.1002/smll.202007221

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Abstract

The formation of highly active and stable acetylene hydrochlorination catalysts is of great industrial importance. The successful replacement of the highly toxic mercuric chloride catalyst with gold has led to a flurry of research in this area. One key aspect, which led to the commercialization of the gold catalyst is the use of thiosulphate as a stabilizing ligand. This study investigates the use of a range of sulfur containing compounds as promoters for production of highly active Au/C catalysts. Promotion is observed across a range of metal sulfates, non‐metal sulfates, and sulfuric acid treatments. This observed enhancement can be optimized by careful consideration of either pre‐ or post‐treatments, concentration of dopants used, and modification of washing steps. Pre‐treatment of the carbon support with sulfuric acid (0.76 m) resulted in the most active Au/C in this series with an acetylene conversion of ≈70% at 200 °C.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Chemistry Cardiff Catalysis Institute (CCI)
Publisher:	Wiley
ISSN:	1613-6810
Funders:	Johnson Matthey
Date of First Compliant Deposit:	26 February 2021
Date of Acceptance:	11 January 2021
Last Modified:	11 Oct 2023 19:53
URI:	https://orca.cardiff.ac.uk/id/eprint/139017

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