Extraction of Platinum(IV) via liquid emulsion membrane containing Cyanex-923 from bromide media

被引：8
|
作者：
Duche, SN [1 ]
Dhadke, PM [1 ]
机构：
[1] Univ Mumbai, Dept Chem Technol, Div Appl Chem, Inorgan Chem Lab, Matunga 400019, Mumbai, India
来源：
SEPARATION SCIENCE AND TECHNOLOGY | 2002年 / 37卷 / 13期
关键词：
liquid emulsion membrane; Platinum(IV); Cyanex-923; hydrobromic acid; extraction; enrichment;
D O I：
10.1081/SS-120005647
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Transport behavior of Pt(IV) from bromide media through a liquid emulsion membrane has been studied using Cyanex-923 as a mobile carrier. Platinum(IV) was quantitatively extracted from external bromide (feed phase) media and stripped in perchloric acid as an internal (strip) phase. The important variables governing the permeation of Pt(IV) through LEM studied are membrane viscosity, concentration of mobile carrier, treatment ratio, speed of agitation, and internal (strip) phase concentration. The optimum condition for extraction of Pt(IV) via liquid emulsion membrane are-internal phase: 4.0 mol dm(-3) HClO4; organic phase: 12% span-80, 7% 1-octanol, and 0.8% Cyanex-923 in xylene; feed phase: 10 ppm of Pt(IV) in 5.0 mol dm(-3) HBr in presence of 0.005 mol dm(-3) SnCl2.
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页码：3011 / 3024
页数：14
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