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聚苯乙烯乙酰化苯丙氨酸型树脂对Ni2+的螯合性能
Chelating Properties of Ni2+ on Phe Resin
【摘要】 用氯乙酰化聚苯乙烯(Chloroacetylized Polystyrene,PS-Acyl-Cl)树脂替代氯甲基树脂与苯丙氨酸(Phenylalanine,Phe)反应制备了PS-Acyl-Phe型螯合树脂,并研究了该树脂在pH、螯合时间、Ni2+浓度等不同条件下对Ni2+的螯合性能,得到了Ni2+型介质的最佳螯合条件:Ni2+溶液浓度为0.1mol/L,pH为3.5~9.0,螯合时间5h,此时树脂的最高螯合量为0.91mmol/g,Phe螯合效率为40.8%.
【Abstract】 A new L-phenylalanine resin (PSAcylPhe) was prepared by chloroacetylated polystyrene (PSAcylCl) instead of merrifield resin (PSCH2Cl) and applied for chelating Ni2+. The effects of pH, chelating time and concentration of Ni2+ on the chelating reaction were investigated for the optimal chelating condition. The results show that under the optimal conditions of Ni2+ concentration 0.1 mol/L, pH 3.5~9.0, and chelating time 1 h, the chelating rate could be up to 40.8%.
【关键词】 聚苯乙烯苯丙氨酸树脂;
Ni2+;
螯合;
氯乙酰化聚苯乙烯;
苯丙氨酸树脂;
【Key words】 L-phenylalanine polystyrene; Ni2+; chelating; chloroacetylated polystyrene; L-phenylalanine resin;
【Key words】 L-phenylalanine polystyrene; Ni2+; chelating; chloroacetylated polystyrene; L-phenylalanine resin;
【基金】 科技部创新基金资助项目(编号:05C26213200578);南京市创新基金资助项目(编号:200407011)
- 【文献出处】 过程工程学报 ,The Chinese Journal of Process Engineering , 编辑部邮箱 ,2007年01期
- 【分类号】TQ028
- 【被引频次】2
- 【下载频次】184