两种硅胶负载铜基功能化离子液体的脱硫性能

H_2S Adsorption Capacity of Two Cu-based Functionalized Ionic Liquids supported on SiO_2

合成了咪唑型和有机胺型铜基离子液体[Bmim]Cl·CuCl_2和Et3NHCl·CuCl_2,并通过等摩尔浸渍法分别将其负载到硅胶表面,得到两种负载型离子液体脱硫剂,分别记为[Bmim]Cl·CuCl_2-SiO_2和Et3NHCl·CuCl_2-SiO_2。采用FI-IR、SEM、BET等分析手段对其进行了表征,结果得到Et3NHCl·CuCl_2在硅胶表面的分散度略优于[Bmim]Cl·CuCl_2,并且Et3NHCl·CuCl_2-SiO_2的比表面积、孔径和孔容略大于[Bmim]Cl·CuCl_2-SiO_2,更有利于对H2S的吸附。通过固定床脱硫系统比较了两种负载型离子液体脱硫剂的性能。

Imidazole and Amine Cu-based ionic liquids [ Bmim] Cl· CuCl2 and Et3 NHCl · CuCl2 were synthesized according to literature and were loaded on SiO2 by impregnation method of equal molar, and two kinds of supported ionic liquids were obtained,noted as [ Bmim] Cl· CuCl2-SiO2and Et3NHCl· CuCl2-SiO2,respectively.The properties of the synthetic ionic liquids （ILs） were confirmed by FT-IR spectrum, SEM and BET.The results showed that the dispersity Et3NHCl·CuCl2of was a little better than that of [ Bmim] Cl·CuCl2 on the surface of SiO2, and the specific surface area, pore diameter and pore volume of Et3NHCl·CuCl2-SiO2 was larger than that of [ Bmim] Cl· CuCl2-SiO2,which was better for the adsorption of H2S.