化学学报 ›› 1987, Vol. 45 ›› Issue (4): 383-386. 上一篇    下一篇

研究论文

伯胺N1923萃取钯(II)的动力学研究

盖会法;高自立;孙思修;郑利强;沈静兰   

  1. 山东大学化学系
  • 发布日期:1987-04-15

Studies on the solvent extraction kinetics of palladium (II) from chloride medium with primary amine N1923

GAI HUIFA;GAO ZILI;SUN SIXIU;ZHENG LIQIANG;SHEN JINGLAN   

  • Published:1987-04-15

报导了用恒界面池搅拌考察N1923-正辛烷溶液从氯化物介质中萃取Pd(II)时诸因素的影响.并用离子选择电极连续检测萃取过程中水相Pd(II)浓度随时间的变化.

关键词: 反应机理, 反应动力学, 萃取剂, 溶剂萃取, 离子选择电极, 钯, 伯胺, 离子浓度

The extration kinetics and mechanism of Pd(II) from chloride medium with primary amine N1923 were studied by using a PVC membrane Pd(II) ion-selective electrode and a constant interfacial area-stirred cell. The experimental results show that the extration process is controlled by the interfacial reactions: PdCl42- + 2RNH3Cl(1) J PdCl4(RNH3)2(1) + 2Cl- (K1, K-1) and PdCl4(RNH3)2(1) + 2RNH3Cl(0) J PdCl4(RNH3)2(0) + 2RNH3Cl(1) (K2, K-2), where (1) and (0) represent the interface and the organic phase, resp. The values of K1, K-2, and K2/K-1 were calculated and the temperature, acidity, and additive (n-octanol) effects on the extration rate are discussed.

Key words: REACTION MECHANISM, REACTION KINETICS, EXTRACTIVE AGENT, SOLVENT EXTRACTION, ION SELECTIVE ELECTRODE, PALLADIUM, PRIMARY AMINE, ION CONCENTRATION

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