镧系元素的固-液萃取分离研究--TBP-NH4SCN-石蜡体系

1.西北师范大学化学系,甘肃,兰州,730070

2.西北师范大学化学系,甘肃,兰州,730070

3.西北师范大学化学系,甘肃,兰州,730070

4.西北师范大学化学系,甘肃,兰州,730070

5.西北师范大学化学系,甘肃,兰州,730070

6.西北师范大学化学系,甘肃,兰州,730070

Solid-Liquid Extraction Behavior of Lanthanide Ions in TBP-NH4SCN-Paraffin System

本文以切片石蜡为溶剂,TBP为萃取剂,研究了NH4SCN-HNO3介质中镧系元素的萃取行为.考察了TBP、NH4SCN浓度、温度对萃取分离的影响,测出了萃合物组成和萃取反应平衡常数及热力学参数.

[1]	Stao T;Sato K;Sekine T.Solvent Extraction 1990[M].Elsever Sci Pub,Amsterdam,1992:997.
[2]	孙淑声;胡学复;王静思等.稀土-硫氰酸铵-磷酸三丁酯体系的溶剂萃取研究[J].化学试剂,1980,1:40-44.
[3]	张若桦;李嘉庆 .TBP从NH4SCN溶液中萃取La3+,Nb3+和Er3+的机理及其萃合物的性质[J].稀有金属,1985,4(04):39-42.
[4]	Tanaka M;Yamada T;Watanabe M et al.On the extractability of lanthanide(Ⅲ) as thiocyanates with neutral extractants[J].Bunseki Kagaku,1993,42:461-465.
[5]	Fujinaga T;Kuwamoto T;Nakayama E .Solid-liquid separation after liquid-liquid extraction[J].Japan Analyst,1969,18:398-399.
[6]	Gao J Z;Choppin G R .Studied the extraction of lanthanides with DBM using molten wax at 80℃[J].Solvent Extraction and Ion Exchange,1995,13(03):495-499.
[7]	Gao J Z;Hu G L;Kang J W;Fan H Y et al.Studied the synergistic extraction of some lanthanides by using PMBP and phen in molten paraffin wax at 70℃[J].Talanta,1994,41:541-544.
[8]	王碧,郭效军,范海燕,杨武,高锦章,康敬万,赵苏.钍与稀土的固-液萃取分离研究及应用[J].稀有金属,1998(04):241-245.
[9]	郑国(钅冒).生物显微技术[M].北京:人民教育出版社,1978:53.
[10]	Marczenko Z.Spectrophotometric Determination of Elements[M].New York:Wiley,1976:375.

上一张下一张

计量

作者相关

文章评分