摘要
制备了以聚环氧氯丙烷为主链、侧链末端含吡咯配位基的2种螯合树脂,产物的化学结构经红外光谱和核磁共振氢谱确认。静态最大吸附实验结果表明:该类树脂对 Cu^(2+)和 Hg^(2+)均有较高的吸附容量(大于1.0 mmol/g),而对 Mg^(2+)和 Zn^(2+)的吸附容量则较低(小于0.5 mmol/g)。吸附动力学研究表明:吸附过程为液膜扩散控制,对Cu^(2+)(pH4)和 Hg^(2+)(pH4)的吸附平衡时间分别约为2.5 h 和4.0 h。此外,2种树脂在吸附性能上的差异反映出它们化学结构的差异。
The authors synthesized two polyether resins （HP4CP and HP2CP） with polyepichlorohydrin as backbone chain and pyrrole groups as ligand at the end of side chains. The chemical structure of the intermediate and target products were determined by dint of infrared spectroscopy （IR） and hydrogen nuclear magnetic resonance spectroscopy （1^H-NMR）. The results of static maximum adsorption experiments show that the resins possess higher adsorption capacity （〉1.0 mmol/g） for Cu^2＋ and Hg^2＋, but lower adsorption capacity （〈0.5 mmol/g） for Mg^2＋ and Zn^2＋. The adsorption kinetics study indicates that liquid film diffusion is the major control step in adsorption process： the resin＇s adsorption equilibrium time to Cu^2＋（pH4） and Hg^2＋（pH4） is 2.5 h and 4.0 h, respectively. Moreover, the discrepancy in adsorption performance of the two resins clearly reflects the corresponding difference in their chemical structure.
出处
《合成树脂及塑料》
EI
CAS
北大核心
2008年第6期37-40,共4页
China Synthetic Resin and Plastics
基金
高等学校博士学科专项科研基金(20040497001)
国家自然科学基金(20474049)资助项目
关键词
螯合树脂
合成
吸附
吡咯
动力学
chelating resin
synthesis
adsorption
pyrrole
kinetics
