乙炔
催化作用
阳离子聚合
无机化学
化学
离子液体
化学计量学
相(物质)
化学工程
材料科学
光化学
有机化学
工程类
作者
Bolin Wang,Yuxue Yue,Saisai Wang,Shujuan Shao,Zhi Chen,Xian‐Hua Fang,Xiangxue Pang,Zhiyan Pan,Jia Zhao,Xiao‐Nian Li
标识
DOI:10.1016/j.gee.2020.06.012
摘要
In the process of acetylene hydrochlorination, the rapid deactivation of supported gold (Au) catalysts by acetylene is still a huge challenge. Here, we provide an innovative strategy for constructing an acetylene–deficient reaction phase on the active site by coating an ionic liquid film on the Au(H2O)/C surface. The reactant ratio of C2H2 to HCl in this acetylene–deficient reaction phase is 1:132, in contrast to the 1:1 M ratio in the gas phase, thus boosting the catalytic stability of Au(H2O)/C catalysts. The kinetic and theoretical analysis showed that the reduction of cationic gold by C2H2 and the generation of carbon deposition can be inhibited in this constructed reaction phase during reaction. The current work not only broadens the scope of supported Au catalysts in acetylene hydrochlorination, but also verifies the perspective of the tunability of stoichiometric balance, which can be used in other catalytic applications.
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