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本文研究1-苯基3-甲基4-苯甲酰吡唑啉酮-5HPMBP)、2-乙基己基膦酸2-乙基己基酯(P507)与磷酸三丁酯(TBP)的甲苯溶液,从高氯酸底液中萃取钆机理。实验发现Gd~(3+)有三元协萃效应。该体系属于螯合中性络合AAB类协萃体系。其一元、二元和三元萃取平衡常数分别为lgβ_1=-4.24(HPMBP),lgβ_1=-2.88(生成Gd(PMBP)_3(HBMBP));lgβ_(12)=-1.04(HPMBP-P507);lgβ_(13)=-0.316(HPMBP-TBP);lgβ_(13)=1.87(生成Gd(PMBP)_3·2TBP);lgβ_(123)=1.04(HPMBP-P507-TBP)。
In this paper, 1-phenyl 3-methyl 4-benzoylpyrazolone-5HPMBP), toluene solution of 2-ethylhexyl 2-ethylhexylphosphonate (P507) and tributyl phosphate (TBP) , Extracting gadolinium from perchlorate bottom solution. The experiment found that Gd ~ (3+) has a triple effect. The system belongs to the Chelating Neutral Complex AAB synergistic extraction system. The equilibrium constants of single, binary and ternary extraction were lgβ_1 = -4.24 (HPMBP), lgβ_1 = -2.88 (GMBPMBP_3), lgβ_ (12) = -1.04 (HPMBP-P507) lgβ_ (13) = -0.316 (HPMBP-TBP); lgβ_ (13) = 1.87 (Gd (PMBP) _3.2TBP); lgβ_ (123) = 1.04 (HPMBP-P507-TBP).