高等学校化学学报 ›› 1982, Vol. 3 ›› Issue (S1): 14.

• 研究论文 • 上一篇    下一篇

酰代吡唑酮作为金属元素萃取剂的研究(Ⅲ)——HAPZ-8113F与一系列有机亚砜对于铈(Ⅲ)的协同萃取及固体络合物的制备

顾翼东, 宋沅   

  1. 复旦大学化学系
  • 收稿日期:1981-12-07 出版日期:1982-12-31 发布日期:1982-12-31

ACYL PYRAZOLONES AS EXTRACTING AGENTS FOR METALLIC IONS (Ⅲ)——SYNFRGISTIC EXTRACTION OF CERIUM(Ⅲ) BY 1-PHENYL, 3-METHYL, 4-T RIFL UOROACETYL PYRAZOLONE-(5) IN COMBINATION WITH SULFOXIDES

Gu Yidong(Yih-Tong Ku), Song Yuan   

  1. Department of Chemistry, Fudan University, Shanghai
  • Received:1981-12-07 Online:1982-12-31 Published:1982-12-31

摘要:

本文比较了1-苯基,3-甲基,4-三氟乙酰吡唑酮(5)(代号为HAPZ-8113F,以HA表示)与多种多碳亚砜和双亚砜(以S表示)对于三价铈的协同萃取效应,以二辛基亚砜的协萃能力为最高。并进一步研究了以二辛基亚砜为中性萃取剂,在硝酸和盐酸体系申,和HAPZ-8113F协同萃取Ce(Ⅲ)时的混合萃合物组成。它们分别是:CeAs和CeA3·NO3·S以及CeA2·Cl·HA和CeA3·Cl·S。从归一化标绘图中推算了各有关的平衡常数。还制得了HAPZ-8113F与钕的固体萃合物及HAPZ-8113F、二甲基亚砜与钕的固体协车合物。它们的组成分别为NdA3·HA和NdA3·S。

Abstract:

Among the various acyl groups substituted 1-phenyl, 3-methyl, pyrazolones for the extraction of cerium(Ⅲ), it has been found previously that 4-trifluoroacetyl substituted compound, abbreviated as HAPZ-8113F and denoted as HA in this paper, is most efficient. Combined use of certain sulfoxides can further bring up the extraction coefficient. The order of synergistic effect is as follows: TOPO > DOSO > DNpSO≈1, 3-DφDSO > l, -2-DφDSO. Through the use of method of normalization in curve plotting, the extracted species in nitric acid medium 13 estimated as a mixtuer of CeA3 and CeA3NO3·S, while in hydrochloric acid medium, it behaves as a mixture of CeA2Cl·HA and CeA3Cl·S. The Synergistic extraction equilibrium coefficients are calculated to be lgK21=3, 43 in HNO3 medium and lgK21=2.86 in HC1 medium respectively, S being di-n-octyl sulfoxide (DOSO) in all cases above, As a comparison, NdA3·HA and NdA3·S have been isotated, S being (CH3)2SO. The corresponding Ce (Ⅲ) compounds are unstable in air, revealed by change of color from light yellow to dark yellow on standing.

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