Selective hydrogenation of acetylene on Pd/SiO2 in bulk liquid phase: A comparison with solid catalyst with ionic liquid layer (SCILL)

被引：24
|
作者：
Hou, Ruijun [1 ]
Lan, Xiaocheng [1 ]
Wang, Tiefeng [1 ]
机构：
[1] Tsinghua Univ, Beijing Key Lab Green React Engn & Technol, Dept Chem Engn, Beijing 100084, Peoples R China
来源：
CATALYSIS TODAY | 2015年 / 251卷
关键词：
Liquid-phase hydrogenation; Acetylene; Selective hydrogenation; Ionic liquid; N-methyl-2-pyrrolidone (NMP); PALLADIUM CATALYSTS; PD NANOPARTICLES; PERFORMANCE; IMPROVE;
D O I：
10.1016/j.cattod.2014.09.006
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Selective hydrogenation of acetylene is usually a gas-phase reaction. In this work, liquid phase was introduced as a selective solvent to improve the selectivity to ethylene by coupling absorption to the reaction. N-methyl-2-pyrrolidone (NMP) and 1,3-dimethylimidazolium methylphosphite ([DMIM][MeHPO3]) were used as selective solvents in two types of liquid modification (in bulk liquid phase and on SCILL). Both types of modification significantly enhanced the ethylene selectivity compared with the gas-phase reaction. The mass transfer could be eliminated almost completely in bulk NMP, slightly on SCILL, but could not be eliminated in bulk [DMIM][MeHPO3]. Among the reactions with liquid introduction, the reaction in bulk NMP could increase the ethylene selectivity to the greatest extent, which had a highest ethylene selectivity of 96.6% at conversion of 96.1%, and outperformed SCILL in catalyst stability. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：47 / 52
页数：6
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