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.
出处
《铀矿冶》
CAS
1991年第3期25-30,共6页
Uranium Mining and Metallurgy
关键词
铀
萃取
萃取剂
BPMOPB
Extraction equilibrium constant Acid dissociation constant Two-phase distribution constant BPMOPB
