新萃取剂BPMOPB及其对铀的萃取  

STUDY ON THE EXTRACTION OF URANIUM BY A NOVEL EXTRACTANT BPMOPB

作　　者：杜慧芳[1] 王羽[1] 傅磊[1] 陈与德[2] 陆国弟[2] 朱志良[2] 李思义[2] 施宪法[2] 毛家骏[2] 

机构地区：[1]复旦大学物理二系 [2]同济大学化学系

出　　处：《铀矿冶》1991年第3期25-30,共6页Uranium Mining and Metallurgy

摘　　要：本文测定了1,4-双-(1′-苯基-3′-甲基-5′-氧代吡唑啉-4′-基)丁二酮-[1,4](BPMOPB)在0.1mol/L NaNO_3溶液中的酸离解常数及其两相分配常数。还研究了硝酸体系中BPMOPB-CHCl_3对铀的萃取,结果表明其生成的配合物是UO_2(HA)^+和UO_2(HA)_2,并计算了萃取平衡常数,探讨了它的萃取机理及萃合物的可能结构。The acid dissociation constants and two-phase distribution constants of 1 , 4-bis ( 1'-phenyl-3'-methyl-5'-oxo-pyrazole-4'-yl)butanedione-[1 -4](BPMOPB) have been determined by pH titration method. The extraction of uranium from nitric acid with BPMOPB has been investigated. The formulas of the metal complexes have been shown to be UO2(HA) and UO2(HA)2. Their extraction equilibrium constants have been calculated and the mechanism of the extraction and the possible structures of the extracted species were discussed.

关 键 词：铀 萃取 萃取剂 BPMOPB 

分 类 号：TL212.32[核科学技术—核燃料循环与材料]