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.
出处
《化学通报》
CAS
CSCD
北大核心
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
