1,9-双(1′-苯基-3′-甲基-5′-氧代吡唑-4′-基)壬二酮-1,9与中性磷氧萃取剂对铀(Ⅵ)协同萃取的研究

STUDY ON SYNERGISTIC EXTRACTION OF URANIUM ( VI ) WITH 1,9-BIS(1'-PHENYL-3'-METHYL-5'-OXOPYRAZOL-4'-YL)- 1,9-NONANEDIONE AND NEUTRAL PHOSPHORUS- BASED EXTRACTANTS

摘要: 研究了1,9-双(1′-苯基-3′-甲基-5′-氧代吡唑-4′-基)壬二酮-1,9(H_2A)与三苯基氧膦(TPPO)或三辛基氧膦(TOPO)对铀(Ⅵ)的协同萃取行为。用斜率法测得协萃合物的组成为UO_2A·B(B为TPPO或TOPO),求得了协萃平衡常数。用萃取法制得了固态协萃合物,并对其组成,UV,IR及~1HNMR进行了研究。

Abstract: In this paper,the behaviour of synergistic extraction by 1,9-bis(1'-phenyl-3'-methyl-5'-oxopyra-zol-4'-yl)-1,9-nonanedione(simplified as H2A) and neutral phosphorus-based extractants (simplified as B) for uranium ( VI ) is investigated. By using slope analysis method the formula of the extracted complexes are shown to be UO2A·B (B represents TPPO and TOPO,respectively). The synergistic extraction equibrium constants are calculated. The solid extracted complexes are prepared with extraction methods. The compounds are studied by elemental analysis, UV, IR and 1HNMR spectroscopy.