Poisoning effect of H<sub>2</sub>S on catalytic performance of AuCl<sub>3</sub>/AC in acetylene hydrochlorination

DAI Bin; ZHANG Chunli; KANG Lihua; ZHU Mingyuan

doi:10.11949/j.issn.0438-1157.20150861

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Poisoning effect of H₂S on catalytic performance of AuCl₃/AC in acetylene hydrochlorination

更新时间：2025-12-10

- Poisoning effect of H₂S on catalytic performance of AuCl₃/AC in acetylene hydrochlorination
- CIESC Journal Issue 9, Pages: 3476-3482(2015)
- 作者机构：
  
  石河子大学化学化工学院, 新疆兵团化工绿色过程重点实验室,新疆,石河子,832003
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20150861
  CLC： Q028.8
- Online First：05 September 2015，
  
  Published：05 September 2015
- 稿件说明：
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DAI Bin, ZHANG Chunli, KANG Lihua, et al. Poisoning effect of H₂S on catalytic performance of AuCl₃/AC in acetylene hydrochlorination[J]. CIESC Journal, 2015, (9): 3476-3482. DOI: 10.11949/j.issn.0438-1157.20150861.
DOI：

DAI Bin, ZHANG Chunli, KANG Lihua, et al. Poisoning effect of H₂S on catalytic performance of AuCl₃/AC in acetylene hydrochlorination[J]. CIESC Journal, 2015, (9): 3476-3482. DOI: 10.11949/j.issn.0438-1157.20150861. DOI：

摘要

采用等体积浸渍法制备了1% AuCl3/AC催化剂

探究了硫化氢(H2S)为毒物对乙炔氢氯化反应中催化剂催化活性的影响及失活机理。催化活性测试结果表明

以H2S为毒物可导致乙炔氢氯化反应中的AuCl3/AC催化剂的失活

且是一个不可逆过程;程序升温还原(TPR)和X射线光电子能谱(XPS)分析结果表明

H2S的加入可有效地加快Au3+还原为Au0;透射电镜能谱(TEM-EDX)观测分析形成的Au-S化合物也可导致催化剂失活

即随着H2S量的增大

更多的Au3+被还原为Au0

且形成的Au-S化合物覆盖在活性位点

使有效的活性组分降低进而导致AuCl3/AC催化剂失活。

Abstract

A study about poisoning effect of hydrogen sulfide (H2S) on the catalytic performance of AuCl3/AC during acetylene hydrochlorination deactivation is described and discussed. 1% AuCl3/AC catalyst is prepared by an incipient wetness impregnation technique. The activity tests demonstrate that H2S poisoning results in the rapid and irreversible deactivation of AuCl3/AC catalyst in acetylene hydrochlorination. Temperature-programmed reduction (TPR) and X-ray photoelectron spectra (XPS) show that H2S addition can effectively accelerate active Au3+ reduction to metallic Au0. The formation of metal sulfide may also be another reason for catalyst deactivation in the presence of H2S

which is supported by transmission electron microscopy (TEM) and energy dispersion X-ray spectrometer (EDX) techniques. In other words

with the increase of H2S added to the feed gases

the content of Au3+ is greatly reduced to metallic Au0. Moreover

the active sites are covered with Au-S compound. Both of them could reduce the effective active component

leading to the deactivation of the AuCl3/AC catalyst.

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Poisoning effect of H2S on catalytic performance of AuCl3/AC in acetylene hydrochlorination

DOI：10.11949/j.issn.0438-1157.20150861

摘要

Abstract

关键词

Keywords

references

Poisoning effect of H₂S on catalytic performance of AuCl₃/AC in acetylene hydrochlorination