摘要
本文研究了新型的双酰代吡唑酮类整合萃取剂1,10-双(1′-苯基-3′-甲基-5′-氧代吡唑-4′-基)癸二酮-[1,10](H_2A)的氯仿溶液从硝酸介质中对11个希土离子,钍和铀的萃取行为。测定了pH_(1/2)值,用斜率法求得萃合物的组成,确定了各自的萃取平衡反应,计算了萃取平衡常数,合成了希土固态萃合物,并对其组成、UV、IR及TG-DTA谱进行了研究。
H2 A is one of a series of bis acyl pyrazolone chelate extractants synthesized recently. In this paper, the complexation and the extraction behaviour of H2A with eleven rare earth ions, thorium(Ⅳ) and uranium (Ⅵ) have been studied in nitric acid. Experimental results showed that the composition of the extracted compounds are LnA·HA, ThA2and UO2A, respectively, in the same experimental condition. Their pH1/2 was determined. Their extractive constants log Ksx were calculated by the slope method. The solid complexes of several rare earth ions were produced. Their composition of these complexes was characterized by elemental analysis, UV, IR and TG-DTA studies.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
1989年第4期52-58,共7页
Chinese Journal of Inorganic Chemistry
基金
国家自然科学基金资助项目
关键词
稀土
钍
铀
萃取
双酰代吡唑酮
extraction bis acyl pyrazolone rare earth thorium uranium
