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.

中文翻译：

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Au / C催化乙炔氯化氢中的硫促进作用

高活性和稳定的乙炔氢氯化催化剂的形成具有重要的工业重要性。用金成功替代剧毒的氯化汞催化剂导致了该领域的大量研究。导致金催化剂商业化的一个关键方面是使用硫代硫酸盐作为稳定配体。这项研究调查了使用一系列含硫化合物作为促进剂来生产高活性Au / C催化剂的方法。在各种金属硫酸盐，非金属硫酸盐和硫酸处理方法中均发现有促进作用。通过仔细考虑预处理或后处理，所用掺杂剂的浓度以及修改洗涤步骤，可以优化所观察到的增强效果。用硫酸预处理碳载体（0.76m）导致该系列中最活跃的Au / C，在200 ° C时乙炔转化率约为70％  。