H_2BPMOPP和Phen协同萃取Ln^(3+)的研究

研究了 1,2 -双 (1′-苯基 - 3′-甲基 - 5′-氧代吡唑 - 4′-基 )邻苯二酮 (H2 BPMOPP,简为 H2 A)和邻菲 口罗啉 (Phen)的氯仿溶液从硝酸介质中对 L n3 +(L n=L a,Pr,Nd,Gd,Dy)的协同萃取。用斜率法确定了萃合物的组成为 L n A· HA· Phen,考察了萃取剂浓度和溶液酸度对萃取机理的影响 ,测定了半萃取 p H1 /2 值和萃取反应平衡常数 Ks.e.,求得了反应的焓变和熵变。

H_2BPMOPP和PMBP协同萃取Ln^(3+)的研究

The synergistic exrtraction of lanthanide ions(La3+,Pr3+,Nd3+ and Gd3+)by bis （1′-phenyl-3′-methyl-5′-pyrazolone-4′-yl）phthaldione（H2BPMOPP or H2A）with 1-phenyl-3-methyl-4-benzoyl-5-pyrazolone（PMBP）from nitric acid solution was studied.The synergistic coefficient for La3+ is 5.21.The composition of the extracted compound was shown to be LaA·HA·PMBP.The pH1/2values for La3+,Pr3+,Nd3+,Gd3+ and Dy3+ are 4.16,3.79,3.56,3.29 and 2.99,respectively.The extraction equilibrium constants,enthalpy change and entropy change of the reaction were also calculated.

1，2－双（1＇－苯基－3＇－甲基－5＇－氧代吡唑－4＇－基）－1，2－苯二酮稀土配合物的合成与表征

用萃取法合成了１５种１，２－双（１＇－苯基－３＇－甲基－５＇－氧代吡唑－４＇－基）－１，２苯二酮（ＢＰＭＯＰＰ，简作Ｈ＿２Ｌ）稀土配合物．元素分析确定其化学组成为ＲＥ＿２Ｌ＿３·ｎＨ＿２Ｏ．通过电子光谱、红外光谱、核磁共振谱、热谱、摩尔电导等进行了表征，并讨论了配合物的性质．