Bimetallic Au-Sn/AC catalysts for acetylene hydrochlorination

被引:60
作者
Dong, Yanzhao [1 ]
Zhang, Haiyang [1 ]
Li, Wei [2 ]
Sun, Mengxia [2 ]
Guo, Cuili [2 ]
Zhang, Jinli [1 ]
机构
[1] Tianjin Univ, Key Lab Syst Bioengn MOE, Tianjin 300072, Peoples R China
[2] Tianjin Univ, Key Lab Green Chem Technol MOE, Tianjin 300072, Peoples R China
关键词
Acetylene hydrochlorination; Au-Sn catalyst; Coking deposition; SURFACE ORGANOMETALLIC CHEMISTRY; GOLD CATALYSTS; VINYL-CHLORIDE; PT-SN/AL2O3; CATALYSTS; ALCOHOL OXIDATION; CARBON SUPPORTS; HYDROGEN; DEHYDROGENATION; DEACTIVATION; ISOBUTANE;
D O I
10.1016/j.jiec.2015.12.031
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
A series of Au-Sn/AC catalysts for acetylene hydrochlorination were prepared by an incipient wetness impregnation method and characterized by BET, XPS, TEM, TPR, XRD, ICP-AES and TPD techniques. It is indicated that Au1Sn1/AC catalyst shows the highest activity and stability with the 95% acetylene conversion after 48 h reaction under the conditions of 170 degrees C and an acetylene gas hourly space velocity of 720 h(-1). The Sn additive can make the Au species dispersed well and weaken the occurrence of coke deposition, as well as inhibit the reduction of Au3+ to Au-0, thereby improving the catalytic activity and stability. (C) 2015 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码:177 / 184
页数:8
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