新型无氟2,2'-联吡啶-4,4'-二羧酸酯的合成及其在超临界二氧化碳萃取金属离子中的应用  

Synthesis of new non-fluorous 2,2'-bipyridine-4,4'-dicarboxylic acid esters and their applications for metal ions extraction in supercritical carbon dioxide

作　　者：聂亨 文勤 原雪芯 杨海健[1] NIE Heng;WEN Qin;YUAN Xunxin;YANG Haijian(College of Chemistry and Materials Science,South-Central Minzu University,Wuhan 430074,China)

机构地区：[1]中南民族大学化学与材料科学学院,武汉430074

出　　处：《中南民族大学学报（自然科学版）》2022年第3期263-270,共8页Journal of South-Central University for Nationalities：Natural Science Edition

基　　金：国家自然科学基金资助项目(51073175);湖北省自然科学基金资助项目(2016CKB704)。

摘　　要：设计并合成了8种新的无氟2,2'-联吡啶-4,4'-二羧酸酯作为螯合配体,将各种金属离子从固体基质转移到超临界二氧化碳(scCO_(2))中;系统地研究了该系列配体在scCO_(2)中对多种金属离子的萃取效率,并计算了金属离子的萃取常数(K_(ex)).结果表明:所有化合物都在一定程度上显示出对Cu^(2+)、Co^(2+)和Ni^(2+)的选择性,萃取效率可达90%以上.8种化合物的K_(ex)值随着同一萃取体系中相同金属离子萃取效率的提高而增加.Eight new non-fluorous 2,2'-bipyridine-4,4'-dicarboxylic acid esters were designed and synthesized as chelating ligands to transport various metal ions from solid matrix into supercritical carbon dioxide(scCO_(2)).The metal ions extraction efficiencies(K_(ex))of the series of ligands were studied systematically and the extraction constants(K_(ex))of the metal ions were calculated.The results indicated that all compounds showed selectivity for Cu^(2+),Co^(2+)and Ni^(2+)to some extends,and the extraction efficiency could reach over 90%.In addition,the Kex values of the eight compounds increased with the increase of extraction efficiency for the same metal ion in the same extraction system.

关 键 词：无氟联吡啶衍生物 超临界二氧化碳 金属离子萃取 萃取常数 

分 类 号：O621.3[理学—有机化学] O658.2[理学—化学]