Bimetallic Au-Ni/CSs catalysts for acetylene hydrochlorination

被引：59

作者：

Pu, Yanfeng ^{[1
]}

Zhang, Jinli ^{[1
]}

Wang, Xia ^{[1
]}

Zhang, Haiyang ^{[1
]}

Yu, Li ^{[1
]}

Dong, Yanzhao ^{[1
]}

Li, Wei ^{[1
]}

机构：

[1] Tianjin Univ, Key Lab Syst Bioengn MOE, Key Lab Green Chem Technol MOE, Tianjin 300072, Peoples R China

来源：

CATALYSIS SCIENCE & TECHNOLOGY | 2014年 / 4卷 / 12期

关键词：

SURFACE; DEACTIVATION; METAL;

D O I：

10.1039/c4cy00769g

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Gold and gold-based bimetallic catalysts for acetylene hydrochlorination were prepared with HAuCl4 center dot 4H(2)O and NiCl2 center dot 6H(2)O as precursors, and were analyzed with BET, TG, XRD, TEM, TPR, and XPS. The Au1Ni3/CSs catalyst shows both high activity and good stability, with a C2H2 conversion of 95.4% after 46 h under a gas hourly space velocity (GHSV) of C2H2 of 900 h(-1). The results indicate that the addition of nickel to gold can inhibit the reduction of catalytically active Au3+ to Au-0 and oxidize Au-0 to Au+ during the preparation of Au-based/CSs catalysts, and weaken the occurrence of coke deposition on the catalyst surface, thus improving the stability of the catalyst.

引用

页码：4426 / 4432

页数：7

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