环境工程学报2012，Vol.6Issue(11)：4119-4122,4.
聚丙烯酸水凝胶对氯化-1-丁基-3-甲基咪唑离子液体的吸附热力学和动力学研究
Thermodynamic and kinetic studies of adsorption of 1-butyl-3-methylimidazole chloride ionic liquid onto PAA hydrogel
摘要
Abstract
A super absorbent of PAA hydrogel was prepared by solution polymerization method.The pH value and the temperature of solution had an effect on the adsorption of 1-butyl-3-methylimidazole chloride ionic liquid onto PAA hydrogel.The results showed that the adsorption capacities of 1-butyl-3-methylimidazole chloride ionic liquid increased with increasing pH value.When pH=2~4,the adsorption capacities increased significantly,while pH was 4,it increased slowly with increase of pH.The adsorption capacities of ionic liquid decreased with increasing temperature.The adsorption behavior of 1-butyl-3-methylimidazole chloride could be described reasonably well by Langmuir isotherm.Chemical adsorption may be inferred by the activation energy Ea(Ea=52.470 kJ/mol)of adsorption obtained from the pseudo-second-order kinetic model.关键词
聚丙烯酸水凝胶/氯化-1-丁基3-甲基咪唑/离子液体/吸附Key words
PAA hydrogel/1-butyl-3-methylimidazole chloride/ionic liquid/absorption分类
资源环境引用本文复制引用
王园,齐秀秀,杨秀菊,倪良..聚丙烯酸水凝胶对氯化-1-丁基-3-甲基咪唑离子液体的吸附热力学和动力学研究[J].环境工程学报,2012,6(11):4119-4122,4.
