Formation of super-concentrated hydrochloric acid in the third phase in tertiary amine N235-ptCl(6)(2-)-HCl system and its influences on the Pt microemulsion extraction

	Formation of super-concentrated hydrochloric acid in the third phase in tertiary amine N235-ptCl(6)(2-)-HCl system and its influences on the Pt microemulsion extraction
	Huang, K; Chen, J; Zhang, CF; Li, ZH; Pan, QH; Sun, Y; Liu, SX; Liu, XX; Li, WH; Yang, ZL
刊名	SCIENCE IN CHINA SERIES B-CHEMISTRY
	2009
卷号	52 期号:11 页码:1825-1834
关键词	solvent extraction third phase super-concentrated hydrochloric acid tertiary amine platinum
通讯作者	[Huang Kun ; Chen Jing ; Zhang ChengFeng ; Pan QingHua ; Sun Yan ; Liu ShaoXuan ; Li WeiHong ; Yang ZhanLan ; Weng ShiFu ; Xu YiZhuang ; Wu JinGuang] Peking Univ, Coll Chem & Mol Engn, Beijing 100871, Peoples R China ; [Zhang ChengFeng ; Liu XueXin] Chinese Acad Sci, Inst Chem, Beijing 100190, Peoples R China ; [Li ZhiHong ; Hu TianDou] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
英文摘要	In this paper, we have investigated the formation of the third-phase in tertiary amine (N235)-PtCl62--HCl system and the microscopic phase structural evolution of platinum-loaded organic phases before and after the occurrence of the third-phase. The third-phase is characterized by various spectroscopic techniques, and the small angle X-ray scattering (SAXS) experiments demonstrate the appearance of nano-aggregates, i.e., water-in-oil reversed micelles, in the third phase. The experimental results indicate that (1) formation of the third phase is related to the aggregation behaviors of nano-reversed micelles in which a super-concentrated hydrochloric acid formed with the H+ to H2O molar ratio being much higher than that of the conventional 37 wt% saturated hydrochloric acid. (2) The occurrence of the super-concentrated HCl results in a great amount of H+ and Cl- ions enriched and confined within the nano-water pools of W/O reversed micelles in third phase. Therefore, the coordination behaviors of platinum complex ions in that super-concentrated hydrochloric acid are very different from their corresponding behaviors in bulk aqueous solutions. It is possible that H+ ions participate in the formation of such complexes as HmPtCl6z+ in the super-concentrated hydrochloric acid. (3) The relative contents of various HmPtCl6z+ complexes are different corresponding to the H+ ion concentrations in confined nanowater pools. The association ability of the acidified tertiary amine N235 molecules (R3NH+) with various HmPtCl6z+ complexes plays an important role in affecting the platinum extraction behaviors.
学科主题	Chemistry
类目[WOS]	Chemistry, Multidisciplinary
研究领域[WOS]	Chemistry
原文出处	SCI
语种	英语
WOS记录号	WOS:000272032700013
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/239540]
专题	高能物理研究所_多学科研究中心中国科学院高能物理研究所
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Huang, K,Chen, J,Zhang, CF,et al. Formation of super-concentrated hydrochloric acid in the third phase in tertiary amine N235-ptCl(6)(2-)-HCl system and its influences on the Pt microemulsion extraction[J]. SCIENCE IN CHINA SERIES B-CHEMISTRY,2009,52(11):1825-1834.
APA	Huang, K.,Chen, J.,Zhang, CF.,Li, ZH.,Pan, QH.,...&胡天斗.(2009).Formation of super-concentrated hydrochloric acid in the third phase in tertiary amine N235-ptCl(6)(2-)-HCl system and its influences on the Pt microemulsion extraction.SCIENCE IN CHINA SERIES B-CHEMISTRY,52(11),1825-1834.
MLA	Huang, K,et al."Formation of super-concentrated hydrochloric acid in the third phase in tertiary amine N235-ptCl(6)(2-)-HCl system and its influences on the Pt microemulsion extraction".SCIENCE IN CHINA SERIES B-CHEMISTRY 52.11(2009):1825-1834.