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	十四烷基二甲基苄基氯化铵萃取Au(CN)_2~-的微观机理; Mechanism of gold extraction from cyanide solution by tetradecyldimethylbenzylammonium chloride
	姜健准 ; 周维金 ; 高宏成 ; 吴瑾光 ; 徐光宪
	2002
关键词	微乳液 十四烷基二甲基苄基氯化铵 反向胶团 Au(CN)-2 FTIR microemulsion Au(CN)(-)(2) FTIR tetradecyldimethylbenzylammonium chloride reversed micelle
英文摘要	通过萃取平衡、傅里叶变换红外光谱及分峰技术研究了季铵盐十四烷基二甲基苄基氯化铵 ( TDM-BAC) -磷酸三丁酯 ( TBP) -正庚烷体系萃取 Au( CN) - 2 的机理及过程 .提出了萃合物的结构模型是基于氢键的超分子体系 ,组成为 [R4N+]· [Au( CN) - 2 ]· 4 H2 O· 4 TBP.当有机相金浓度大于 3g·L- 1 时 ,有机相中存在聚集现象 .通过激光光散射技术测定了有机相中反向胶团的大小 ,表明萃取过程是分散在水相中的胶团在协萃剂 (或助表面活性剂 )作用下溶入有机相 ,转型为反向胶团或微乳液 ( W/O型 )聚集状态 .; The mechanism of solvent extraction of gold from cyanide solution by quaternary ammonium salt, tetradecyldimethylbenzylammonium chloride (TDMBAC)/tri-n-butyl phosphate (TBP)/heptane was studied. The microstructure of complexes, [R4N+] . [Au(CN)(2)(-)] . 4H(2)O . 4TBP, in the organic phase was proposed based on hydrogen-bonding mechanism. Aggregations formed when gold ( I) mass concentration in the organic phase reached 3 g . L-1. The radii of aggregations were determined by dynamic laser scattering (DLS). During the extraction process, the complexes of TDMBAC and Au (CN)(2)(-) formed micelles in the aqueous phase. When cosolvent such as TBP was added to the aqueous phase, the complexes transferred into the organic phase and reversed micelles or microemulsion (W/O) were formed.; SCI(E); EI; 中文核心期刊要目总览(PKU); 中国科技核心期刊(ISTIC); 中国科学引文数据库(CSCD); 3; 12; 2230-2233; 23
语种	中文
出处	知网 ; 万方 ; SCI
出版者	高等学校化学学报
内容类型	其他
源URL	[http://hdl.handle.net/20.500.11897/80765]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	姜健准,周维金,高宏成,等. 十四烷基二甲基苄基氯化铵萃取Au(CN)_2~-的微观机理, Mechanism of gold extraction from cyanide solution by tetradecyldimethylbenzylammonium chloride. 2002-01-01.

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