Chlorogallate(Ⅲ) ionic liquids: Synthesis, acidity determination and their catalytic performances for isobutane alkylation  

作　　者：XING XueQi ZHAO GuoYing CUI JianZhong 

机构地区：[1]Beijing Key Laboratory of lonic Liquids Clean Process,Key Laboratory of Green Process and Engineering,Institute of Process Engineering,Chinese Academy of Sciences,Beijing 100190,China [2]Department of Chemistry,Tianjin University,Tianjin 300072,China

出　　处：《Science China Chemistry》2012年第8期1542-1547,共6页中国科学（化学英文版）

基　　金：the financial support from the Beijing Municipal Natural Science Foundation (2122052);Key Program of National Natural Science Foundation of China (21036007);National Basic Research Program of China (2009CB219904)

摘　　要：A series of triethylammonium-based chlorogallate（Ⅲ） ionic liquids with varied Lewis acidity was synthesized, characterized, and firstly applied to isobutane alkylation. The [Et3NHC1]-GaCl3 with XGaCl3 =0.65 displayed a potential catalytic activity for the alkylation. The addition of copper halide into the chlorogallate（Ⅲ） ionic liquids dramatically enhanced the alkylation reac- tion. Up to 70.1% Cs selectivity and 91.3 RON were achieved with the [Et3NHC1]-GaC13-CuC1 （XGaCl3 = 0.65, CuCI = 5% tool） under 0.5 MPa, 900 r/min, 15 min, 288 K using the industrial C4 cut （isobutane/butene = 10）. These results indicate that the chlorogallate（Ⅲ） system may be used as a promising catalyst for the C4 alkylation.A series of triethylammonium-based chlorogallate(Ⅲ) ionic liquids with varied Lewis acidity was synthesized, characterized, and firstly applied to isobutane alkylation. The [Et3NHCl]-GaCl3 with χGaCl3 = 0.65 displayed a potential catalytic activity for the alkylation. The addition of copper halide into the chlorogallate(Ⅲ) ionic liquids dramatically enhanced the alkylation reaction. Up to 70.1% C8 selectivity and 91.3 RON were achieved with the [Et3NHCl]-GaCl3-CuCl (χGaCl3 = 0.65, CuCl = 5% mol) under 0.5 MPa, 900 r/min, 15 min, 288 K using the industrial C4 cut (isobutane/butene = 10). These results indicate that the chlorogallate(Ⅲ) system may be used as a promising catalyst for the C4 alkylation.

关 键 词：chlorogallate（Ⅲ） acidic ionic liquid Lewis acid ALKYLATION ISOBUTANE 

分 类 号：O643[理学—物理化学] TQ241.1[理学—化学]