聚乙烯吡啶树脂对苯甲酸的吸附性能研究  

Adsorption of benzoic acid from aqueous solution by polyvinylpyridine resin

作　　者：陶为华[1,2] 王敏[2] 

机构地区：[1]江苏省滩涂生物资源与环境保护重点实验室,江苏盐城224051 [2]盐城师范学院化学化工学院,江苏盐城224051

出　　处：《分子科学学报》2014年第6期497-503,共7页Journal of Molecular Science

基　　金：江苏省滩涂生物资源与环境保护重点建设实验室开放课题(JLCBE12007);江苏省自然科学基金资助项目(BK2012673)

摘　　要：通过悬浮聚合的方法,合成了一种聚乙烯吡啶树脂(WH-08).研究了WH-08树脂在不同温度、pH及盐浓度下对苯甲酸的吸附效果.结果表明,Freundlich等温吸附方程能够很好地拟合WH-08树脂吸附苯甲酸的等温线;WH-08树脂对苯甲酸的吸附行为是氢键所致,吸附是一放热过程且能够自发进行.在无机盐存在下,与大孔弱碱树脂D304和强碱性树脂D206相比,WH-08树脂吸附苯甲酸的性能几乎不受无机盐的影响.Polyvinylpyridine resin （WH-08） was synthesized via suspension polymerization. The influ- ence of temperatures, pH and inorganic salt on the adsorption performance of WH-08 for benzoic acid was studied. Results showed that the adsorption date fitted the Freundlich adsorption isotherms well. It is believed that the hydrogen bonding occurred in the adsorption of benzoic acid onto WH-08, and an exothermic process which ran spontaneously. Compared to weak base resin D304 and strong base resin D206, for adsorption benzoic acid, WH-08 was less influenced in the presence of inorganic salt.

关 键 词：聚乙烯吡啶树脂 苯甲酸 吸附 热力学 无机盐 

分 类 号：O647[理学—物理化学]