1-苯基-3-甲基-4-苯甲酰基吡唑酮-5在硝酸稀释剂中对Pb(Ⅱ)萃取的热动力学研究

Thermokinetic Research of the Solvent Extraction of Pb(Ⅱ) with 1-Phenyl-3-Methyl-4-Benzoyl-Pyrazolone-5 in a Nitric Acid Medium

研究了1_苯基_3_甲基_4_苯甲酰基吡唑酮_5(HPMBP)从硝酸介质中对Pb2+的萃取,测定了萃取反应的反应热ΔrHmθ;运用斜率法得出萃合物的组成为Pb(PMBP)2;得到了萃取反应平衡方程式Pb2++2HPMBP(o)=Pb(PMBP)2+2H+;得出了反应的速率方程v=Kf[HPMBP](o)[H+]2[Pb2+]-Kb[HPMBP](o)-1[H+]-2[Pb2+](O).

The solvent extraction of Pb（ Ⅱ ）with 1-phenyl-3-methyl-4-benzoyl-pyrazolone-5（HPMBP） from the medium of Nitric Acid was studied, and the composing of complex was obtained as Pb（PMBP）2 by the slope analysis method; the equilibrium equation of solvent action was concluded as Pb^2＋ ＋ 2HPMBP（o） = Pb（PMBP）2 ＋ 2H^＋ ; and the rate equation of the action has been obtained as well.