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本文研究1-苯基3-甲基-4-苯甲酰基吡唑啉酮-5(HPMBP)、N,N-二(1-甲庚基)乙酰胺(N503)、三辛基氧化膦(TOPO)的甲苯溶液,从高氯酸底液中分别萃取Tb~(3+)及 Nd~(3+)机理。实验发现Nd~(3+)只有二元协萃(HPMBP+N503,HPMBP+TOPO),无三元协萃效应,但Tb~(3+)存在三元协萃。根据实验数据得到一元、二元、三元萃取平衡常数分别为logβ_1,T_b=-3.64,logβ_1,Nd=-4.41(HPMBP体系,生成萃合物为Tb(PMBP)_3、Nd(PMBP)_3);logβ_1~*,T_b=-2.64,logβ_1~*,N_d=-3.41(萃合物为Tb(PMBP)_3(HPMBP)、Nd(PMBP)_3(HPMBP)); logβ_(12),T_b=1.45,logβ_(12),N_d=0.959(HPMBP+N503体系);logβ_(13),T_b=6.40,logβ_(13),N_d=5.65(HPMBP+TOPO体系);logβ_(123),T_b=4.01(HPMBP+N503+TOPO三元体系)。
In this paper, the effects of 1-phenyl 3-methyl-4-benzoylpyrazolone-5 (HPMBP), N, TOPO) in toluene, the mechanism of extracting Tb ~ (3+) and Nd ~ (3+) from the perchlorate bottom solution respectively. The results showed that there was no triple coexistence effect in Nd ~ (3+), but there was ternary coexistence in Tb ~ (3+). According to the experimental data, the equilibrium constants of single, binary and ternary extraction are logβ_1, T_b = -3.64, logβ_1, Nd = -4.41 (HPMBP system, Tb (PMBP) _3, Nd (PMBP) _3) ; logβ_1 ~ *, T_b = -2.64, logβ_1 ~ *, N_d = -3.41 (the complexes are Tb (PMBP) _3 (HPMBP) and Nd (PMBP) _3 , logβ_ (13), T_b = 6.40, logβ_ (13), N_d = 5.65 (HPMBP + TOPO system); logβ_ (123), T_b = 4.01 (HPMBP + N503 + TOPO ternary system).