| 二烷基亚砜萃取铑的性能与机理研究 |
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| 引用本文： | 李耀威,戚锡堆,古国榜.二烷基亚砜萃取铑的性能与机理研究[J].华南理工大学学报(自然科学版),2008,36(7). |
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| 作者姓名： | 李耀威 戚锡堆 古国榜 |
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| 作者单位： | 1. 华南师范大学,化学与环境学院,广东,广州,510006
2. 华南理工大学,化学与化工学院,广东,广州,510640 |
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| 摘 要： | 研究了以SnCl2 为活化试剂, 二烷基亚砜(DEHSO)从Rh-Sn-Cl体系中萃取Rh的性能及机理。结果表明：溶液中未添加SnCl2时，Rh的萃取率很低，随着溶液中Sn]/Rh]的比值增大，Rh的萃取率增大，当溶液中Sn]/Rh]摩尔比达到6以上，HCl浓度为3 mol?L-1时，用1.0 mol?L-1 DEHSO萃取Rh，Rh的萃取率可达到99％。负载有机相中的铑可用5 mol?L-1 HCl + 0.03 mol?L-1 NaClO3进行反萃。机理研究表明该体系是以酸性离子缔合机理进行萃取反应。
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| 关 键 词： | 铑 溶剂萃取 二烷基亚砜 二氯化锡 |
| 收稿时间： | 2007-5-28 |
| 修稿时间： | 2007-10-31 |
Study on Extraction Properties and Mechanism of Rhodium with Dialkyl Sulphoxide |
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| Li Yao-wei,Qi Xi-dui,Gu Guo-bang.Study on Extraction Properties and Mechanism of Rhodium with Dialkyl Sulphoxide[J].Journal of South China University of Technology(Natural Science Edition),2008,36(7). |
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| Authors: | Li Yao-wei Qi Xi-dui Gu Guo-bang |
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| Abstract: | The extraction properties and mechanism of rhodium complexes with stannous chloride using dialkyl sulphoxide are investigated. In the absence of Sn(Ⅱ), Rh is hardly extracted from low acidity solution. The high extractability of Rh is achieved using the 3 mol?L-1 HCl solution at Sn]/Rh]≥6 as the aqueous phase. At the Sn]/Rh]=6, the extraction percentage of Rh reaches to 99% with 1.0 mol?L-1 dialkyl sulphoxide. Stripping Rh from the loaded organic phase with 5 mol?L-1 HCl + 0.03 mol?L-1 NaClO3 is proposed . The reaction of extracting Rh is acid ion-association extraction. |
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| Keywords: | Rhodium Solvent extraction Dialkyl sulphoxide Stannous chloride |
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