论文部分内容阅读
本文研究了Ce(Ⅲ)与1-苯基-3-甲基-4-苯甲酰基-吡唑酮-5(PMBP)的作用。实验结果表明:萃取络合物的组成随萃取剂的浓度而改变,当[PMBP]<0.2M及≥0.2M时萃取分别按下式进行:萃取络合物在有机相中以单分子形式存在。测定了CeA_3·HA的萃取平衡常数。lgK=-4.30±0.05。发现Ce(Ⅲ)在萃取过程中可被空气氧化成Ce(Ⅳ)。在不同条件下由萃取相中制得了Ce(Ⅲ)和Ce(Ⅳ)与PMBP的固态络合物,其组成分别为CeA_3·HA及CeA_4并对其结晶形状、熔点、热稳定性、红外光谱及在某些溶剂中的溶解情况进行了研究。
In this paper, the effects of Ce (Ⅲ) and 1-phenyl-3-methyl-4-benzoyl-pyrazolone-5 (PMBP) The experimental results show that the composition of the extraction complex changes with the concentration of the extractant. The extraction of [PMBP] <0.2 M and> 0.2 M respectively follows the formula: The extraction complex exists as a single molecule in the organic phase . The extraction equilibrium constant of CeA 3 · HA was measured. lgK = -4.30 ± 0.05. It was found that Ce (Ⅲ) can be oxidized by air into Ce (Ⅳ) during the extraction process. The solid complexes of Ce (Ⅲ), Ce (Ⅳ) and PMBP were obtained from the extract phase under different conditions. The compositions of the complexes were CeA 3 · HA and CeA 4, respectively. Their crystalline shapes, melting points, thermal stability, And dissolved in some solvents were studied.