十四烷基二甲基苄基氯化铵萃取金的研究

北京大学学报（自然科学版）

十四烷基二甲基苄基氯化铵萃取金的研究

姜健准¹,李小¹,周维金¹,高宏成¹,吴瑾光²,徐光宪²,陈景³

收稿日期:2000-03-22 出版日期:2000-11-20 发布日期:2000-11-20

Solvent Extraction of Gold from Alkaline Cyanide Solution by Tetradecyldimethylbenzylammonium Chloride

JIANG Jianzhun¹，LI Xiao¹，ZHOU Weijin¹，GAO Hongcheng¹，WU Jinguang²，XU Guangxian²，CHEN Jing³

¹Technical Physics Department, Peking University, Beijing, 100871；²College of Chemistry and Molecular Engineering, Peking University, Beijing

Received:2000-03-22 Online:2000-11-20 Published:2000-11-20

摘要/Abstract

摘要： 用放射性核素¹⁹⁸Au示踪法研究了季铵盐十四烷基二甲基苄基氯化铵(TDMBA)从碱性氰化液中萃取金，考察了水相金浓度、助溶剂含量、萃取时间、季铵盐与KAu(CN)₂摩尔比值n_r等因素对萃取率的影响，并研究了有机相的连续萃取、有机相金含量与水含量的关系。结果表明，助溶剂体积比10%以上时，十四烷基二甲基苄基氯化铵对金具有萃取能力强，平衡时间短的特点。季铵盐阳离子与Au(CN)₂^-结合比为1∶1,符合离子缔合机理。

关键词: 溶剂萃取, 十四烷基二甲基苄基氯化铵, KAu(CN)₂, ¹⁹⁸Au核素示踪法

Abstract: The solvent extraction of gold from alkaline cyanide solution by tetradecyldimethylbenzylammounium chloride(TDMBA) was described by labeled ¹⁹⁸Au. The influence of several variables such as gold and cosolvent concentrations, shaking times, the ratio of TDMBA and gold on the extraction of gold(I) and the water concentration of the organic phase were studied. While the cosolvent ratio is more than 10%, in the TDMBA system, gold(I) was extracted completely. The gold extraction mechanism was discussed on the bases of water concentrations of organic phases and Infrared Spectrum. It was found that the aggregation ratio of TDMBA and Au(CN)₂^- is 1∶1.

Key words: solvent extraction, tetradecyldimethylbenzylammonium chloride, KAu(CN)₂, labelled ¹⁹⁸Au

中图分类号:

O611

姜健准,李小,周维金,高宏成,吴瑾光,徐光宪,陈景. 十四烷基二甲基苄基氯化铵萃取金的研究[J]. 北京大学学报（自然科学版）.

JIANG Jianzhun,LI Xiao,ZHOU Weijin,GAO Hongcheng,WU Jinguang,XU Guangxian,CHEN Jing. Solvent Extraction of Gold from Alkaline Cyanide Solution by Tetradecyldimethylbenzylammonium Chloride[J]. Acta Scientiarum Naturalium Universitatis Pekinensis.

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链接本文: https://xbna.pku.edu.cn/CN/

https://xbna.pku.edu.cn/CN/Y2000/V36/I6/766

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