氨化HEH/EHP膜基萃取钕、钐及传质研究  

Studies on Transfer and Extraction Performances of Samarium andNeodymium with HEH/EHP Ammoniated Using a Hollow Fiber

作　　者：张凤君[1] 马根祥[1] 李德谦[1] 吴庸烈[1] 

机构地区：[1]中国科学院长春应用化学研究所稀土及物理开放实验室

出　　处：《稀土》1999年第4期8-11,34,共5页Chinese Rare Earths

基　　金：国家攀登计划基金;国家自然科学基金

摘　　要：本文采用自制聚偏氟乙烯中空纤维膜器，在氨化ＨＥＨ／ＥＨＰ煤油体系中对钕、钐的萃取及传质性能进行了研究。结果表明，无论萃取剂氨化与否，膜器中的萃取反应均可视为准一级反应；探讨了氨化ＨＥＨ／ＥＨＰ对膜阻的影响及其在膜萃取过程和同级萃取反萃中，稀土离子。The membranes of polyvinylidene fluoride are used to study the transfer and extraction performances of Sm() and Nd() with the extraction system of HEH/EHPkerosene.The results show that the extraction reaction could be thought as quasifirst order reaction whether the extractant is ammoniated or not.The effect of HEH/EHP ammoniated on membrane resistance and the exchange relationship of Ln3+,H+ and NH+4 are discussed in extraction and extractionstripping processes.

关 键 词：中空纤维膜 萃取 传质 稀土 钕 钐 HEH EHP 

分 类 号：O614.335[理学—无机化学] O614.337[理学—化学]