| 伯胺N1923与中性磷萃取剂对Zn(Ⅱ)的协同萃取 |
| SYNERGISTIC EXTRACTION OF ZINC(Ⅱ) WITH PRIMARY AMINE N1923 AND NEUTRAL ORGANOPHOSPHORUS REAGENTS |
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| 摘要: 本文研究了仲碳伯胺N1923与中性磷萃取剂的正庚烷溶液,从盐酸介质中对Zn(Ⅱ)的协同萃取。用斜率法及等摩尔系列法确定协萃配合物的组成为:(RNH3Cl)3·ZnCl2·TBP、(RNH3Cl)2·ZnCl2·DBBP,求得协萃反应的平衡常数分别为logK12
(TBP)=3.09,logK12(DBBP)=2.90,协萃配合物的生成常数分别为logβ12(TBP)=1.34,logβ12(DBBP)=1.90.计算了协萃反应的热力学函数值,并对协萃配合物的IR、NMR谱进行了讨论。 |
| 关键词: 伯胺 中性磷萃取剂 协同萃取 锌 |
| 基金项目: 国家自然科学基金资助项目 |
| Abstract: The synergistic extraction of zinc(Ⅱ) from hydrochloric acid with primary amine N1923 and neutral organophosphorus reagents (TBP,DBBP) has been investigated. By the methods of slope analysis and constant mole,the compositions of the syncrgistic extracting complexes have been determined to be (RNH3C1)3·ZnCl2·TBP and (RNH3C1)2·ZnCl2·DBBP respectively. The mechanism of the synergistic extraction of zinc(Ⅱ) has been proposed as follows:ZnCl2+(RNH3Cl)3(o)+TBP(o)⇔(RNH3Cl)3ZnCl2·TBP(o)ZnCl2+2/3(RNH3Cl(o)+DBBP(o)⇔(RNH3Cl)2·ZnCl2·DBBP(o)Moreover,the equilibrium constants and the thermodynamic functions of the synergistic reactions have been calculated. The IR and NMR spectra of the synergistic extracting complexes have been studied as well. |
| Keywords: primary amine neutral organophosphorus extractant synergism zine |
| 投稿时间：1987-10-14 |
| 摘要点击次数: 1205 |
| 全文下载次数: 1045 |
| 马根祥,李德谦.伯胺N1923与中性磷萃取剂对Zn(Ⅱ)的协同萃取[J].无机化学学报,1989,5(4):65-71. |
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