聚醚型螯合树脂的合成及其等温吸附性能  

Synthesis and Adsorption Isotherms Properties of Polyether Chelating Resins

作　　者：张双庆[1] 张超灿[1] 贺昌海[1] 

机构地区：[1]武汉理工大学材料科学与工程学院,武汉430070

出　　处：《化工中间体》2010年第4期38-43,共6页

摘　　要：通过接枝反应制备了一系列以聚环氧氯丙烷为主链,侧链末端含吡咯配位基的HPnCP(n=6,4,2)螯合树脂,各步产物的化学结构经IR和1H NMR检测得以确认。静态吸附实验及等温吸附实验结果表明:该类树脂对Cu(Ⅱ)和Hg(Ⅱ)有着较好的吸附性能(大于1.0mmol/g);对Co(Ⅱ)和Cd(Ⅱ)达到饱和吸附时的平衡浓度约为0.06～0.07mol/l;HP_4CP对Co(Ⅱ)和Cd(Ⅱ)以及HP_2CP对Co(Ⅱ)的等温吸附既可用Langmuir方程描述也可用Freundlich方程描述;但HP_2CP对Cd(Ⅱ)的等温吸附不符合Langmuir方程,只可用Freundlich方程描述。A series of polyether chelating resins HPnCP（n=6,4,2） with terminal pyrrole groups in the side chains were synthesized,and the chemical structure of the intermediate and target products were confirmed by IR and 1H NMR detection.The results of static adsorption and adsorption isotherms experiments showed that the resins have higher adsorption capacity（1.0mmol/g） for Cu（Ⅱ） and Hg（Ⅱ）;the equilibrium concentration of Co（Ⅱ） and Cd（Ⅱ） was 0.06～0.07mol/l when adsorption capacity of the resins was saturated;the adsorption isotherms of HP4CP for Co（Ⅱ） and Cd （Ⅱ） and that of HP_2CP for Co（Ⅱ） can be described by Langmuir or Freundlich isotherm equation, whereas the adsorption isotherms of HP_2CP for Cd（Ⅱ） can only be described by Freundlich isotherm equation.

关 键 词：螯合树脂 等温吸附 吡咯 合成 

分 类 号：TQ326.51[化学工程—合成树脂塑料工业]