通过1,4-对苯二酚二缩水甘油醚和2,2＇-二苯并咪唑二乙胺反应合成四苯并咪唑单体( TBMZ),经甲醛等缩合生成酚醛聚合物为基质的苯并咪唑螯合树脂(PTBMzS).新型螯合树脂配基含量达2.1～3.02 mmol/g.新树脂及其单体结构经13C核磁共振谱、FT-IR红外光谱、元素分析和DSC分析确证.测定了Cu2、Ni2、Zn2、Cd2和Co2氯化物在pH值为1.0 ～6.0的缓冲溶液中的配位容量.实验结果表明,该类螯合树脂对Cu2+有高度的选择性,KCux≥4.3非竞争条件下,PTBMZ-1的最大配位容量为1.15 mmoL/g( pH=5.0,CU2+),PTBMZ-2的最大配位容量为0.97 mmol/g( pH=5.0,Cu2),配基占有率分别为35.9％,33.4％.PTBMZ-1树脂对Cu2+吸附较快,t1/2=21 min.电子顺磁共振谱和FT-IR光谱分析结果表明,形成n(金属离子):n(配基)=1∶2的螯合物为主.
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