期刊
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
卷 18, 期 1, 页码 49-54出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jiec.2011.11.075
关键词
Carrier; Acetylene hydrochlorination; Bimetallic Au-La catalysts; Deactivation
资金
- 973 Project [2012CB720302, 2010CB234605]
- Corps Science and Technology Innovation Team [2011CC001]
Gold and gold-based bimetallic catalysts for acetylene hydrochlorination were prepared with HAuCl4 center dot 4H(2)O and LaCl3 center dot 7H(2)O as precursors and analyzed by the characterization methods of BET, XRD, SEM, TG and ICP-AES. The results indicate that pitch-based spherical activated carbon SAC is the optimal carrier; Au/C catalyst deactivates easily for coke deposition and the valence change of Au in the reaction, the addition of lanthanum to gold can weaken the occurrence of coke deposition and inhibit the valence change of gold to improve the stability of the catalyst; Under the reaction conditions of temperature 423 K, C2H2 hourly space velocity (GHSV) 360 h(-1), feed volume ratio V (HCl)/V (C2H2) = 1.15 and Au loading of 1 wt%, the optimal atomic ratio of Au, La (a/a) was 1:3, the conversion of acetylene was up to 98% and the selectivity to VCM was more than 99.8%. (C) 2011 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据