含三乙烯二胺强弱碱功能基阴离子交换树脂的制备及其吸附性能  

Preparation and Adsorption Behavior of Strongly-weakly Basic Anion-exchange Resins Including TEDA Groups

作　　者：赫连朋丽[1] 范云鸽[1] 史作清[1] 

机构地区：[1]南开大学高分子化学研究所,天津300071

出　　处：《应用化学》2005年第10期1055-1059,共5页Chinese Journal of Applied Chemistry

基　　金：国家自然科学基金(29974015)资助项目

摘　　要：以三乙烯二胺为胺化剂制备了含强弱碱功能基的阴离子交换树脂,通过滴定曲线测定了树脂的性能;在与季铵D201和叔胺D301R树脂对照吸附水溶液中苯甲酸实验中,进行了静态吸附行为和吸附动力学研究。结果表明,3种树脂的pH滴定曲线不受温度的影响,三乙烯二胺强弱碱功能基的阴离子交换树脂含有强弱碱基团,其滴定曲线介于强碱D201与叔胺弱碱树脂D301R之间;而该树脂对苯甲酸平衡吸附量可达5.974 451 mmol/g,介于D201(8.432 689 mmol/g)与D301R(5.497 871 mmol/g)之间;在303 K时,树脂吸附苯甲酸的平衡速率常数为0.030 60,其结果较相同条件下D201(0.044 89)的小,而比D301R(0.026 13)的大。A strongly-weakly basic anion-exchange resin was prepared with Triethylenediamine（TEDA） as a amination agent, and the capability of the resin was studied by titration. A comparison study was made on the adsorption behavior for benzoic acid of the resin vs that of the D201 resin and D301R resin, including the static and dynamic adsorption behavior. The results indicated that the pH titration curves of the three resins were not affected by temperature. The titration curve of the new resin is between the curves of the stronglybasic resin D201 and the weakly-basic resin D301R. The amount of benzoic acid adsorbed at equilibrium by this resin was 5. 974 451 mmol/g, which was between that for D201 （8.432 689 mmol/g） and D301R （5.497 871 mmol/g）. At 303 K, the adsorption rate constant of the resin for benzoic acid was 0. 030 60 min^-1 , which was less than that for D201 （0. 044 89 min^-1 ） , and greater than that for D301R （0.026 13 min^-1）.

关 键 词：三乙烯二胺 强弱碱基阴离子交换树脂 滴定曲线 苯甲酸 吸附性能 

分 类 号：O647.3[理学—物理化学]