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化学学报
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化学学报 ›› 1993, Vol. 51 ›› Issue (1): 30-35. 上一篇    下一篇

研究论文

伯胺N1923和三苯基氧化膦萃取金(Ⅲ)的动力学Ⅱ:二元萃取剂体系萃取AuCl4-

孙思修;高自立;沈静蓝;柴金岭   

  1. 山东大学化学系;山东师范大学化学系
  • 发布日期:1993-01-15

The extraction kinetics of gold(Ⅲ)by primaryamine N1923 and triphenylphosphine oxide Ⅱ: the extraction of AuCl4- in a system of binary-extractant

SUN SIXIU;GAO ZILI;SHEN JINGLAN;CHAI JINLING   

  • Published:1993-01-15

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用恒界面池法研究了伯胺N1923和三苯基氧化膦(TPPO)二元萃取剂体系从盐酸介质中萃取AuCl4-的动力学,提出了界面化学反应控制机理.认为在界面区域内同时进行着N1923、TPPO以及二者的缔合物萃取AuCl4-的三个平行反应.三者的共同作用使Au(Ⅲ)向有机相的传质较N1923或TPPO的一元萃取剂体系明显加速.文中对这种动力学加速现象和动力学协同效应以及它们与热力学协同萃取的关系进行了讨论.

关键词: 金, 反应动力学, 溶剂萃取, 三苯基膦, 协同萃取, 氧化膦, 伯胺, N1923

The extration kinetics of Au(III) by primary amine N1923 and triphenylphosphine oxide in chloroform from HCl solution was studied. The mechanism was reported that there are 3 parallel reactions at the interface.

Key words: GOLD, REACTION KINETICS, SOLVENT EXTRACTION, TRIPHENYLPHOSPHINE, SYNERGIC SOLVENT EXTRACTION, PHOSPHINE OXIDE, PRIMARY AMINE

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