CAJ | 학술논문

采用饱和法、等摩尔法、斜率法确定了Cyanex272(HA)浸渍树脂吸萃重稀土(RE)形成萃合物的萃合比(HA/RE摩尔比)为3,Cl~-不参与配位.通过红外光谱分析,确定了萃取剂Cyanex272在萃取色层中表现为单聚体,生成的萃合物为REA3,这与常规的溶剂萃取剂在煤油体系中表现为二聚体相比减少了萃取剂用量.Cyanex272浸渍树脂吸萃重稀土的反应式可表示为RE~(3+)_((a))+3HA_((r))=REA_(3(r))+3H~+_((a)).
채용포화법、등마이법、사솔법학정료Cyanex272(HA)침지수지흡췌중희토(RE)형성췌합물적췌합비(HA/RE마이비)위3,Cl~-불삼여배위.통과홍외광보분석,학정료췌취제Cyanex272재췌취색층중표현위단취체,생성적췌합물위REA3,저여상규적용제췌취제재매유체계중표현위이취체상비감소료췌취제용량.Cyanex272침지수지흡췌중희토적반응식가표시위RE~(3+)_((a))+3HA_((r))=REA_(3(r))+3H~+_((a)).
Through the methods of saturation, equivalent molarity and slope, the experimental results showed that the extraction ratio for Cyanex272 resin approached 3 and chlorine ions did not take part in the coordination reaction. The results by infrared spectroscopy also showed that Cyanex272 was single-polymer in extraction chromatography by which the amount of extractant was less than double-polymer in solvent extraction. The extracted compound was determined as REA_3. The adsorption-extraction mechanism by Cyanex272 could be expressed as RE~(3+)_((a))+3HA_((r))=REA_(3(r))+3H~+_((a)).