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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 fifteen lanthanides and yttrium by 4,4’-sebacyl-bis- (1-phenyl-3-methyl-pyrazolone-5) The experiment uses chloroform as the diluent and the aqueous phase is NaClO_4-HClO_4 system with μ = 0.1. The extract composition was determined to be MA (HA). The extraction equilibrium constant, half-extraction pH (5.0 × 10 -3 mol / L DBPMP-CHCl 3) and the separation factor between adjacent elements were determined. The results showed that the extraction capacity and separation ability of DBPMP were more than that of PMBP. The average separation factor between light and light soil was 3.84. Especially, the separation factor between lanthanum and cerium was as high as 2.0 × 10 ~ 2. In this paper, the extraction thermodynamic properties of DBPMP for cerium, 钷, 铥 and 镥 were also studied.