Recovery of precious metals from spent automobile catalytic converters using supercritical carbon dioxide
Recovery of precious metals from spent automobile catalytic converters using supercritical carbon dioxide
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DOI：
10.1002/apj.156
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发表时间：
2008-07
影响因子：
1.8
通讯作者：
M. Faisal;Y. Atsuta;H. Daimon;K. Fujie
中科院分区：
文献类型：
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作者：
M. Faisal;Y. Atsuta;H. Daimon;K. Fujie
研究了用含有螯合配体磷酸三丁酯（TBP）的超临界二氧化碳从固体基质样品中回收贵金属（铂、钯和铑）。考察了萃取温度、萃取压力和静态萃取时间对萃取效率的影响。所有实验均使用超临界流体萃取系统在40-80 °C的温度范围和高达30 MPa的压力下进行。结果表明，加入螯合配体是必要的，以萃取金属。用纯超临界二氧化碳进行的实验没有提取金属。据观察，金属的萃取效率强烈依赖于温度、压力和静态萃取时间。版权所有© 2008科廷科技大学和约翰威利父子有限公司。
Recovery of precious metals (platinum, palladium, and rhodium) from a solid matrix sample by supercritical carbon dioxide containing a chelating ligand, a tributyl phosphate (TBP), was studied. The effects of temperature, pressure, and static extraction time on the extraction efficiency were investigated. All experiments were performed using a supercritical fluid extraction system at a temperature range of 40–80 °C and a pressure of up to 30 MPa. Results showed that addition of the chelating ligand was necessary to extract the metals. Experiments with pure supercritical carbon dioxide result in no extraction of the metals. It has been observed that the extraction efficiency of metals was strongly dependent on temperature, pressure, and static extraction time. Copyright © 2008 Curtin University of Technology and John Wiley & Sons, Ltd.