PMBP与中性磷萃取剂对铽(Ⅲ)的协同萃取

高等学校化学学报 ›› 1983, Vol. 4 ›› Issue (3): 277.

PMBP与中性磷萃取剂对铽(Ⅲ)的协同萃取

陈金榜, 杜金庚, 路德元

北京大学技术物理系

收稿日期:1981-11-11 出版日期:1983-06-24 发布日期:1983-06-24

SYNERGISTIC EXTRACTION OF TERBIUM WITH1-PHENYL-3-METHYL-4-BENZOYL-PYRAZOLONE-5 AND NEUTRAL ORGANOPHOSPHORUS EXTRACTANTS

Chen Jinbang, Du Jingeng, Lu Deyuan

Department of Technical Physics, Beijing University, Beijing

Received:1981-11-11 Online:1983-06-24 Published:1983-06-24

摘要/Abstract

摘要： 本文研究了1-苯基-3-甲基-4-苯甲酰基吡唑啉酮-5(PMBP)与丁基膦酸二丁酯(DBBP)或磷酸三丁酯(TBP)的氯苯溶液在硝酸介质中对铽(Ⅲ)的协同萃取。测得了萃合物的组成及其萃取平衡常数,讨论了萃合物的可能结构式及协同萃取机理。

Abstract: The extraction of terbium (Ⅲ) from nitric acid solutions with mixtures of 1-phenyl-3-methyl-4-benzoyl-pyrazolone-5(PMBP)and dibutyl butylphos-phonate (DBBP), tri-n-butyl phosphate (TBP) in chlorobenzol has been investigated.The formulas of the extracted species have been shown to be TbA₃·HA, TbA₃·2DBBP and TbA₃·2TBP. Their extraction equilibrium constants have been calculated with the following results: for Tb³⁺ (10^-5M)/HNO₃,NaNO₃(μ=0.1)/PMBP-C₆H₅Cl system,K_e=[TbA₃·HA]₀[H⁺]³/[Tb³⁺][HA]0⁴=1.17×10^-3(15℃) for Tb³⁺ (10^-5M)/HNO₃,NaNO₃(μ= 0.1)/PMBP-DBBP-C₆H₅Cl system,K_s,c=[TbA₃·2DBBP]₀[H⁺]³/[Tb³⁺][HA]0³[B]0²=2.19×10²(20℃) for Tb³⁺ (10^-5M)/HNO₃,NaNO₃(μ=0.1)/PMBP-TBP-C₆H₅Cl system,K_s,e=[TbA₃·2TBP]₀[H⁺]³/[Tb³⁺][HA]0³[B]0²=1.37×10¹(20℃) The mechanism of the extraction and structures of the extracted species are discussed.

TrendMD:

陈金榜, 杜金庚, 路德元. PMBP与中性磷萃取剂对铽(Ⅲ)的协同萃取. 高等学校化学学报, 1983, 4(3): 277.

Chen Jinbang, Du Jingeng, Lu Deyuan. SYNERGISTIC EXTRACTION OF TERBIUM WITH1-PHENYL-3-METHYL-4-BENZOYL-PYRAZOLONE-5 AND NEUTRAL ORGANOPHOSPHORUS EXTRACTANTS. Chem. J. Chinese Universities, 1983, 4(3): 277.