介孔硅SBA-15对水溶液中咪唑基离子液体的吸附性能研究  

Adsorption of mesoporous silica SBA-15 for imidazole ionic liquids in aqueous solutions

作　　者：纪开吉[1] 杨杰[1] 岳群峰[1] 

机构地区：[1]哈尔滨师范大学化学化工学院,黑龙江哈尔滨150025

出　　处：《化学工程师》2014年第11期72-75,共4页Chemical Engineer

摘　　要：本文研究了介孔硅SBA-15对水中咪唑基离子液体[Bmim]Cl和[Bmim]OH的吸附行为。合成的SBA-15具有有序的二维六方介孔结构。研究发现升高温度会使SBA-15对离子液体的吸附量降低,吸附过程是放热过程。25℃下将吸附等温数据进行Langmuir和Freundlich方程线性拟合,相比之下Langmuir模型更适合用来描述SBA-15对两种离子液的吸附行为,SBA-15对[Bmim]Cl和[Bmim]OH最大吸附量分别为336.7和467.3mg·g-1。The mesoporous silica SBA-15, with ordered two-dimensional mesoporous structure, was be synthesized and be used for adsorbent of imidazole ionic liquids in aqueous solutions. The study showed that the adsorption process is an exothermic process. The adsorption isotherms fit the typical Langmuir adsorption model well at 25℃. SBA-15 show high adsorption capacity for two kinds of ionic liquid, [Bmim]Cl and [Bmim]OH（336.7 and467.3mg·g- 1respectively）.

关 键 词：介孔硅 SBA-15 咪唑基离子液体 吸附 

分 类 号：O665.4[理学—分析化学]