1-苯基-3-甲基-4-苯甲酰基吡唑酮-5从醋酸盐中萃取镍的研究  

STUDIES ON THE EXTRACTION OF NICKEL(Ⅱ)WITH 1-PHENYL-3-METHYL-4-BENZOYL-PYRAZOLONE-5 FROM ACETATE SOLUTION

作　　者：印志磊[1] 鲍猛[1] 俞海云[1] 郭今心[1] 李雪梅[1] 孙思修[1] 董岩[2] 

机构地区：[1]山东大学化学院,济南250100 [2]德州学院化学系,德州253023

出　　处：《山东大学学报（理学版）》2002年第3期258-261,共4页Journal of Shandong University(Natural Science)

摘　　要：研究了 1 苯基 3 甲基 4 苯甲酰基吡唑酮 5从醋酸盐介质中对镍的萃取 ,发现体系中同时存在三个萃取平衡 .给出了三种萃合物可能的结构 ;The distribution equilibrium of nickel(Ⅱ) between aqueous phases of sodium acetate acetic acid and organic phases of 1 phenyl 3 methyl 4 benzoyl pyrazolone (PMBP,HR)in chloroform have been studied at 298±1K.The extraction reactions were found to be Ni 2+ +2HR (o) NiR 2(o) +2H +, K 2,0 NiAc ++2HR (o) NiR 2·HA 2(o) +H +, K 2,1 NiAc 2+2HR (o) NiR 2·2HA 2(o) , K 2,2 The constant K 2,0 ,K 2,1 and K 2,2 was calculated to be 10 -6.02 ,10 -2.19 and 10 2.98 respectively.The influences of temperature on the extraction equilibrium were also investigated.The values of △H°,△G° and △S° for the every parallel extraction reaction were obtained and a method was suggested which is to resolve the parallel extraction reaction enthalpy( △H°) .

关 键 词：HPMBP 萃取平衡 镍 醋酸盐 热焓 

分 类 号：O652[理学—分析化学]