Salting-out induced three-liquid-phase separation of Pt(IV), Pd(II) and Rh(III) in system of S201-acetonitrile-NaCl-water
Zhang, Chao1,2; Huang, Kun1; Yu, Pinhua1,2; Liu, Huizhou1; Huang, K
2011-07-12
发表期刊SEPARATION AND PURIFICATION TECHNOLOGY
ISSN1383-5866
卷号80期号:1页码:81-89
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.
关键词Acetonitrile Three-liquid-phase Extraction (Tlpe) Pgms Salting-out Microheterogeneity
文章类型Article
WOS标题词Science & Technology ; Technology
DOI10.1016/j.seppur.2011.04.011
收录类别SCI
语种英语
关键词[WOS]WATER-ACETONITRILE MIXTURES ; AQUEOUS BIPHASIC SYSTEMS ; INDUCED PHASE-SEPARATION ; PLATINUM-GROUP METALS ; EXTRACTION SYSTEMS ; POLYETHYLENE-GLYCOL ; SOLVATION ; PALLADIUM ; PYRIDINECARBOXAMIDES ; FERMENTATION
WOS研究方向Engineering
WOS类目Engineering, Chemical
WOS记录号WOS:000292857300011
引用统计
被引频次:15[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
版本出版稿
条目标识符http://ir.ipe.ac.cn/handle/122111/4693
专题湿法冶金清洁生产技术国家工程实验室
通讯作者Huang, K
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
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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,&Huang, K.(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.
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