文章基本信息

标题：Effect of Au nano-particle aggregation on the deactivation of the AuCl₃/AC catalyst for acetylene hydrochlorination
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作者：Bin Dai ; Qinqin Wang ; Feng Yu 等
期刊名称：Scientific Reports
电子版ISSN：2045-2322
出版年度：2015
卷号：5
DOI：10.1038/srep10553
出版社：Springer Nature
摘要：A detailed study of the valence state and distribution of the AuCl₃/AC catalyst during the acetylene hydrochlorination deactivation process is described and discussed. Temperature-programmed reduction and X-ray photoelectron spectral analysis indicate that the active Au³⁺ reduction to metallic Au⁰ is one reason for the deactivation of AuCl₃/AC catalyst. Transmission electron microscopy characterization demonstrated that the particle size of Au nano-particles increases with increasing reaction time. The results indicated that metallic Au⁰ exhibits considerable catalytic activity and that Au nano-particle aggregation may be another reason for the AuCl₃/AC catalytic activity in acetylene hydrochlorination.