摘要
本文研究了4,4’-癸二酰-双-(1-苯基-3-甲基-吡唑酮-5)(简称DBPMP)对十五个镧系元素和钇的萃取。实验以氯仿为稀释剂,水相为μ=0.1的NaClO_4-HClO_4体系。得到萃合物组成为MA(HA),并测定了萃取平衡常数、半萃取pH值(5.0×10^(-3)mol/l DBPMP-CHCl_3)以及相邻元素之间的分离因数。结果表明,DBPMP对希土的萃取能力和分离能力大于PMBP,轻希土之间的平均分离因数为3.84,尤其是镧与铈之间的分离因数高达2.0×10~2。本文还研究了DBPMP对铈、钷、铥、镥的萃取热力学性质。
In this paper, the extraction of lanthanides and yttrium with CHC13 solution of 4,4'-decanedioyl-bis-(1-phenyl-3-methyl-5-pyrazolone) (DBPMP) is studied. The ionic strength ot the aqueous solution is controlled at 0.1 with sodium perchlorate. All the rare earth elements are extracted as MA(HA) . The equilibrium constants, pH1/2 (5.0×10-3mol/l D3PMP-CHC13)and the separation factors for each pair of the rare earth elements are calculated and compared with those of PMBP. The results show that DBPMP possesses much higher extractin and separating capability than PMBP. Especially, the separation factor for La-Ce is as high as 2.04×102 and the average separation factor from La to Tb is 3.84 Results of the thermodynamic studies of extraction about Ce, Pm, Tm and Lu are also reported.
出处
《核化学与放射化学》
CAS
CSCD
北大核心
1989年第3期129-135,F003,共8页
Journal of Nuclear and Radiochemistry
