TY - JOUR
T1 - Selective hydrogenation of acetylene on Pd/SiO2 in bulk liquid phase
T2 - A comparison with solid catalyst with ionic liquid layer (SCILL)
AU - Hou, Ruijun
AU - Lan, Xiaocheng
AU - Wang, Tiefeng
N1 - Publisher Copyright:
© 2014 Elsevier B.V. All rights reserved.
PY - 2015/8/1
Y1 - 2015/8/1
N2 - 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.
AB - 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.
KW - Acetylene
KW - Ionic liquid N-methyl-2-pyrrolidone (NMP)
KW - Liquid-phase hydrogenation
KW - Selective hydrogenation
UR - http://www.scopus.com/inward/record.url?scp=84929904212&partnerID=8YFLogxK
U2 - 10.1016/j.cattod.2014.09.006
DO - 10.1016/j.cattod.2014.09.006
M3 - Article
AN - SCOPUS:84929904212
SN - 0920-5861
VL - 251
SP - 47
EP - 52
JO - Catalysis Today
JF - Catalysis Today
ER -