壳聚糖银(Ⅰ)配合物的合成及吸附动力学  

Synthesis and Adsorption Kinetics of Silver(Ⅰ) Complex with Chitosan

作　　者：张苏敏[1] 魏永锋[1] 郎惠云[1] 

机构地区：[1]西北大学化学系,西安710069

出　　处：《化学通报》2005年第4期296-300,共5页Chemistry

基　　金：陕西省自然科学基金 (2 0 0 1H10 );陕西省教育厅专项科学研究计划 (0 1JK0 73)资助项目

摘　　要：研究了壳聚糖对Ag(Ⅰ )离子的吸附动力学 ,并对吸附条件进行优化 ,得到了较为理想的产物。用紫外光谱、红外光谱、元素分析及核磁共振对配合物的结构和组成进行了表征。结果表明 ,壳聚糖与Ag(Ⅰ )离子配位生成配合物Ag(CTS) 2 NO3 ;其吸附行为符合Freundich吸附等温式 ,此反应是一级反应 ,反应的活化能为 2 1 92kJ·mol-1,3 0℃时速率常数为 0 0 41 0h-1。The isothermal adsorp tion kinetics of chitosan(CTS) for silver ions has been investigated. The optimu m adsorption condition was selected and an ideal complex compound was prepared. The structure and the composition of the complex compound were confirmed by IR s pectra, UV_Vis spectra, element analysis, 1H NMR. The result showed th at it is Ag(CTS) 2NO 3. The adsorption kinetics was satisfied with Fre undich ad sorption equation and first_order equation. The constant of the first_order reac tion is 0.0410h -1 at 30℃. Its activation energy is 21.92kJ· mol -1.

关 键 词：吸附动力学 配合物 壳聚糖 银(Ⅰ) Ag(Ⅰ) 合成 吸附等温式 吸附条件 紫外光谱 红外光谱 核磁共振 元素分析 吸附行为 一级反应 速率常数 活化能 离子 理想 配位 

分 类 号：O636[理学—高分子化学]