| Title: |
Sulfur promotion in Au/C catalyzed acetylene hydrochlorination |
| Authors: |
Dawson, SR; Pattisson, S; Malta, G; Dummer, NF; Smith, LR; Lazaridou, A; Allen, CS; Davies, TE; Freakley, SJ; Kondrat, SA; Kiely, CJ; Johnston, P; Hutchings, GJ |
| Publisher Information: |
Wiley |
| Publication Year: |
2021 |
| Collection: |
Oxford University Research Archive (ORA) |
| Description: |
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. |
| Document Type: |
article in journal/newspaper |
| Language: |
English |
| Relation: |
https://doi.org/10.1002/smll.202007221 |
| DOI: |
10.1002/smll.202007221 |
| Availability: |
https://doi.org/10.1002/smll.202007221; https://ora.ox.ac.uk/objects/uuid:0e53d700-d684-4116-babf-50114f2f6995 |
| Rights: |
info:eu-repo/semantics/openAccess ; CC Attribution (CC BY) |
| Accession Number: |
edsbas.386601B7 |
| Database: |
BASE |