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分别将N-甲基咪唑和N-丁基咪唑通过共价键固定于树脂载体上,制备了固载化甲基咪唑离子液体(MCl)和固载化丁基咪唑离子液体(BCl),MCl和BCl可作为一种新型的强碱型阴离子交换树脂。研究了MCl和BCl对盐酸体系中Fe(III)的吸附性能,其吸附平衡时间为6h,拟二级动力学模型能更好地描述MCl和BCl对Fe(III)的吸附动力学过程;随着温度的升高,MCl和BCl对Fe(III)的吸附量增大,表明该过程是一个吸热反应,在298K时,MCl和BCl对Fe(III)的最大吸附量分别为24.9mg/g和71.1mg/g;随着盐酸浓度的增加,MCl和BCl对Fe(III)的吸附量增大,而且溶液中Cl-浓度的增加,也会提高MCl和BCl对Fe(III)的吸附量。MCl和BCl可从盐酸体系中回收Fe(III),而且BCl的效果要优于MCl。
Abstract：Supported methylimidazolium ionic liquid(MCl) and supported butylimidazolium ionic liquid(BCl) were prepared by covalent anchoring N-methylimidazole and N-butylimidazole on polymer supporters. MCl and BCl could be used as a new strongly basic anion exchange resins. The adsorption behaviors of Fe(III) in hydrochloric acid medium with MCl and BCl were studied. The equilibrium time was 6h, and Pseudo-second-order kinetic model could describe the adsorption kinetics of Fe(III) on MCl and BCl better. The adsorption capacity increased with the increase of temperature. The adsorption of Fe(III) from hydrochloric acid medium on MCl and BCl was an endothermic process. The maximum adsorption capacity of Fe(III) on MCl and BCl at 298 K was 24.9mg/g and 71.1mg/g, respectively. The adsorption capacity also increased with the increase of HCl concentration and Cl- concentration in solution. MCl and BCl could recover Fe(III) from HCl medium, and the adsorption capacity of BCl was better than that of MCl.
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基本信息:
DOI：10.16026/j.cnki.iea.2014.06.009
中图分类号:O647.3
引用信息:
[1]祝丽荔,张振江,张玉环,等.固载化烷基咪唑离子液体对盐酸体系中Fe(Ⅲ)的吸附性能研究[J].离子交换与吸附,2014,30(06):551-559.DOI:10.16026/j.cnki.iea.2014.06.009.
基金信息:
山东省中青年科学家科研奖励基金(BS2013CL035);; 鲁东大学引进人才项目(LY2013012);; 鲁东大学大学生科技创新项目(13l027)
2014-12-20
2014-12-20