1,9-双(1′-苯基-3′-甲基-5′-氧代吡唑-4′-基)-壬二酮-[1,9]与含氮中性配体对镨(Ⅲ)的协同萃取

Synergistic Extraction of Pr(Ⅲ) by 1,9-Bis(1′-phenyl-3′-methyl-5′-oxopyrazole-4′-yl)-1,9-nonanedione with Neutral Nitrogenous Extractants

研究了 1,9 双 (1′ 苯基 3′ 甲基 5′ 氧代吡唑 4′ 基 )壬二酮 [1,9](H2 A)与含氮中性萃取剂 (B) ,如1,10 菲啉、2 ,9 二甲基 4 ,7 二苯基 1,10 菲啉、5 硝基 1,10 菲啉、2 ,2′ 联吡啶和 4 ,4′ 联吡啶 ,对镨 (Ⅲ )的协同萃取行为 ,确定了协萃配合物组成为PrA·HA·B ,求出了协同萃取平衡常数 ,制得了固态协萃络合物 ,并用元素分析、IR、UV、TG DTA对其组成和性质进行了表征。

The synergistic extractions of Pr(Ⅲ) with 1,9-bis(1′-phenyl-3′-methyl-5′-oxopyrazole-4′-yl)-1,9-nonanedione(H 2A) and neutral nitrogenous bidentate extractants(B), such as 1,10-phenanthroline(Phen), 2,9-dimethyl-4,7-diphenyl-phenanthroline(DDPhen), 5-nitro-phenanthroline(NPhen), 2,2′- bipyridyl(2,2′-bipy) and 4,4′-bipyridyl(4,4′-bipy), have been investigated. The extraction complex was shown to be PrA·HA·B. The extraction constants were determined. The solid extracted species PrHA·NPhen was obtained and confirmed by elemental analysis, IR, UV, TG and DTA.