伯胺N1923溶剂浸渍树脂吸附In(Ⅲ)的性能及机理  

Adsorption Properties and Mechanism of Indium(Ⅲ)by Prime Amine N1923 Solvent Impregnated Resins

作　　者：陈晓亮[1,2] 刘军深 高学珍[1] 魏士龙[1] 张妍[1] CHEN Xiaoliang;LIU Junshen;GAO Xuezhen;WEI Shilong;ZHANG Yan(School of Chemistry&Materials Science,Ludong University,Yantai 264039,China;Yantai Luda Environmental Impact Assessment Co.Ltd.,Yantai 264004,China)

机构地区：[1]鲁东大学化学与材料科学学院,山东烟台264039 [2]烟台鲁达环境影响评价有限公司,山东烟台264004

出　　处：《鲁东大学学报（自然科学版）》2020年第4期366-370,377,共6页Journal of Ludong University:Natural Science Edition

基　　金：国家科技支撑计划课题(2015BAB02B03)。

摘　　要：以大孔树脂HZ830为载体、伯胺N1923为萃取剂制备了N1923浸渍树脂,并在盐酸体系中对该浸渍树脂吸附In(Ⅲ)的性能和机理进行了研究。研究表明:N1923浸渍树脂吸附In(Ⅲ)的最佳pH为3.0,25℃时饱和吸附容量为32.5 mg·g-1。通过饱和法、等摩尔系列法和斜率法探讨了浸渍树脂吸附In(Ⅲ)的机理,Cl-对浸渍树脂吸附In(Ⅲ)的性能没有影响。饱和法实验测得N1923浸渍树脂吸附In(Ⅲ)饱和吸附量为37.7 mg·g-1;等摩尔系列法表明萃取剂和In(Ⅲ)摩尔数之比为3∶1时吸附效果最佳;通过改变萃取剂含量进行斜率法实验,结果表明浸渍树脂萃取In(Ⅲ)的萃取摩尔比为3∶1。通过萃合物及浸渍树脂的红外光谱确定其萃取机理为溶剂化萃取,萃合物在树脂相的组成为[(RNH2)3InCl3]res。Solvent impregnated resins(SIRs) were prepared by a dry-impregnation technique using macroporous resin(HZ830) as the supporter,and primary amine N1923 as the extractant.The adsorption properties and mechanism for indium(Ⅲ) with this resin from hydrochloric acid medium were investigated.It was shown that the optimum adsorption pH was 3.0,and the saturation adsorption capacity was 32.5 mg·g-1 at 25 ℃.Cl- had no effect for the adsorption for indium(Ⅲ) with the resin.The adsorption mechanism of indium(Ⅲ) in hydrochloric acid was investigated by saturation capacity method,slope method and constant molecular series method.The measured adsorption capacity of In(Ⅲ) onto impregnated resin was 37.7 mg·g-1 with saturation capacity method.The adsorption capacity of impregnated resin was the best while the molar ratio of N1923 in the resin to In(Ⅲ) was 3∶1.It was shown that the extraction ratio of N1923 in the resin to In(Ⅲ) was 3∶1 by changing the content of extractant in resin in slope method.The extraction mechanism of impregnating resin was the solvation extraction confirmed by FTIR spectrograms of extracted complexes and impregnated resins.The composition of the extracted complexes in resin was[(RNH2)3InCl3]res.

关 键 词：溶剂浸渍树脂 In(Ⅲ) 吸附机理 

分 类 号：O647.3[理学—物理化学]