含氮杂环修饰的超高交联树脂对水中邻甲苯胺的吸附研究

Adsorption of O-Methylanilinein Aqueous by Hypercrosslinked Resins Modified Nitrogenous Heterocyclic Compounds

摘要: 分别选用2-吡咯烷酮和2-咪唑烷酮为修饰剂，通过傅克反应对氯球进行改性，制备两种吸附树脂，通过静态吸附实验，探讨了两种树脂对水中邻甲苯胺的吸附性能。表征结果表明：树脂微孔体积较小、孔径较小、比表面积较大，红外谱图结果表明2-吡咯烷酮和2-咪唑烷酮基团已经成功的修饰在树脂表面。静态吸附实验结果表明：2-吡咯烷酮树脂(命名为PRLMR)和2-咪唑烷酮树脂(命名为IDLMR)对邻甲苯胺的吸附等温线符合Langmuir方程，吸附热力学实验结果表明：PRLMR和IDLMR对邻甲苯胺的吸附是物理吸附。

Abstract: Two kinds of hypercrosslinked adsorption resins were prepared by using 2-pyrrolidone or 2-imidazolidinone to modify chloromethylated polystyrene crosslinked microspheres by Frie-del-Crafts reaction and characterized by BET surface area meter. Adsorption of o-Methylaniline in aqueous by hypercrosslinked resins modified nitrogenous heterocyclic compounds was studied. The static adsorption isotherm was drawn to find out which was the best in the two resins. The results show that the resin has the properties of microporous and medium specific surface area, and the 2-pyrrolidone and 2-imidazolidinone groups have been successfully modified on the resin surface. The static adsorption experiment shows that the adsorption isotherms of the two resins on o-methylaniline are more in line with the Langmuir equation. Adsorption thermodynamics ex-periments show that the adsorption for o-methylaniline is mainly physical.