Salting-out induced three-liquid-phase separation of Pt(IV), Pd(II) and Rh(III) in system of S201-acetonitrile-NaCl-water

CORC > 过程工程研究所 > 中国科学院过程工程研究所 > 湿法冶金清洁生产技术国家工程实验室

	Salting-out induced three-liquid-phase separation of Pt(IV), Pd(II) and Rh(III) in system of S201-acetonitrile-NaCl-water
	Zhang, Chao 1,2; Huang, Kun 1; Yu, Pinhua 1,2; Liu, Huizhou 1
刊名	SEPARATION AND PURIFICATION TECHNOLOGY
	2011-07-12
卷号	80 期号:1 页码:81-89
关键词	Acetonitrile Three-liquid-phase extraction (TLPE) PGMs Salting-out Microheterogeneity
ISSN号	1383-5866
通讯作者	Huang, K
英文摘要	Salting-out induced three-liquid-phase system (TLPS) of diisopentyl sulfide (S201)-acetonitrile-NaCl-water was explored to extract and separate platinum, palladium and rhodium with one-step method. The influences of phase-forming behaviors of TLPS on partition of platinum-group metal (PGM) ions were investigated by changing the phase-forming salt and its concentration, HCl concentration in equilibrating salt aqueous phases and the initial volume ratio of acetonitrile to aqueous NaCl solution. Experimental results indicated Pd(II), Pt(IV) and Rh(III) were selectively concentrated into the 5201 organic top phase, acetonitrile-rich middle phase and NaCl aqueous bottom phase respectively. The three-liquid-phase partition of platinum metal ions occurred with the salting-out induced two-phase splitting of acetonitrile-water mixtures. A micro-mechanism model is proposed to explain the influence of salting-out induced phase splitting behavior of three-liquid-phase system on mass transfer of PGM ions. Appearance of microscopic molecular aggregates accounts for the micro-phase enrichment of platinum metal ions. The competition of two opposite processes, salting-out induced dehydration of acetonitrile molecules in aqueous solutions while strong re-hydration of salting-out acetonitrile molecules in separated acetonitrile-rich phase, plays an important role in affecting the phase-forming behaviors and three-liquid-phase mass transfer of different platinum metal ions. (C) 2011 Elsevier B.V. All rights reserved.
WOS标题词	Science & Technology ; Technology
类目[WOS]	Engineering, Chemical
研究领域[WOS]	Engineering
关键词[WOS]	WATER-ACETONITRILE MIXTURES ; AQUEOUS BIPHASIC SYSTEMS ; INDUCED PHASE-SEPARATION ; PLATINUM-GROUP METALS ; EXTRACTION SYSTEMS ; POLYETHYLENE-GLYCOL ; SOLVATION ; PALLADIUM ; PYRIDINECARBOXAMIDES ; FERMENTATION
收录类别	SCI
语种	英语
WOS记录号	WOS:000292857300011
公开日期	2013-11-01
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.ipe.ac.cn/handle/122111/4693]
专题	过程工程研究所_湿法冶金清洁生产技术国家工程实验室
作者单位	1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, State Key Lab Biochem Engn, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Chao,Huang, Kun,Yu, Pinhua,et al. Salting-out induced three-liquid-phase separation of Pt(IV), Pd(II) and Rh(III) in system of S201-acetonitrile-NaCl-water[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2011,80(1):81-89.
APA	Zhang, Chao,Huang, Kun,Yu, Pinhua,&Liu, Huizhou.(2011).Salting-out induced three-liquid-phase separation of Pt(IV), Pd(II) and Rh(III) in system of S201-acetonitrile-NaCl-water.SEPARATION AND PURIFICATION TECHNOLOGY,80(1),81-89.
MLA	Zhang, Chao,et al."Salting-out induced three-liquid-phase separation of Pt(IV), Pd(II) and Rh(III) in system of S201-acetonitrile-NaCl-water".SEPARATION AND PURIFICATION TECHNOLOGY 80.1(2011):81-89.