紫外分光光度测量系统在线跟踪研究NKA-II树脂吸附间氯苯胺的行为  

The Adsorption Behavior of m-chloroaniline on NKA-II Resins by Online Spectrophotometer Measure System

作　　者：刘兰[1] 陈炳稔[1] 

机构地区：[1]华南师范大学化学与环境科学学院,广东广州510631

出　　处：《当代化工》2007年第2期218-222,共5页Contemporary Chemical Industry

摘　　要：利用紫外-可见分光光度法跟踪观察了NKA-II树脂吸附间氯苯胺的行为。利用固—液界面吸附的动力学方程,求取表观吸附速率常数(k),测定了平衡吸附量(Qe),分析计算出了吸附质的亲和能(Ua)及吸附势(E)。实验结果表明,NKA-II树脂吸附间氯苯胺的速率随温度升高而增大,随间氯苯胺浓度的增大而减小;当温度一定时,溶质的吸附量随原始浓度(C0)的增加而增加,吸附势则随着吸附量的增加而降低小;吸附质对吸附剂的亲和能也是随着吸附质浓度的增大而减小。Adsorption behavior of m- chloroaniline on NKA- Ⅱresins at different condition were followed by online spectrophotometer measure system. The rate constant of apparent adsorption was evaluated by the kinetic equation of solid - liquid interface adsorption. The results show that the rate of adsorption of m - chloreaniline on resins increased with the increasing of temperature, when the temperature was fixed, the adsorptive capacity increase with the increase of the concentration of the sobent while adsoption Potential was decreases with the increase of sobent.

关 键 词：NKA—Ⅱ树脂 间氯苯胺 表观吸附速率常数 平衡吸附量 吸附势 

分 类 号：O657.3[理学—分析化学]