1，4－双（1′－苯基－3′－甲基－5′－氧代吡唑－4′－基）丁二酮－〔1，4〕萃取稀土的研究

Extraction of rare earth ions with 1,4 bis (1′ phenyl 3′ methyl 5′ pyrazolone 4′ yl) butanedione 1,4

在硝酸介质中，研究了１，４－双（１′－苯基－３′－甲基－５′－氧代吡唑－４′－基）丁二酮－〔１，４〕（Ｈ２ＢＰＭＰＢＤ，记为Ｈ２Ａ）的氯仿溶液对ＲＥ３＋（ＲＥ＝Ｌａ，Ｐｒ，Ｎｄ，Ｇｄ，Ｙ，Ｄｙ）离子的萃取平衡．用斜率法和等摩尔系列法确定了萃合物的组成为ＲＥＢＰＭＰＢＤ·ＨＢＰＭＰＢＤ。

The extraction of RE 3+ (RE=La, Pr, Nd, Gd, Y, Dy) from nitric acid solutions with 1, 4 bis(1′ phenyl 3′ methyl 5′ pyrazolone 4′ yl) butanedione 1,4 (H 2BPMPBD) has been studied. The composition of extracted compounds of rare earth is shown to be REBPMPBD·HBPMPBD by the methods of slop and equimolar series, The pH values of half of extraction and thermodynamic function of extracted reaction have also been determined.