| 二丁基硫醚的合成及其萃取分离钯、铂的研究 |
| Dibutyl Sulfide: Synthesis, Pd, Pt Extraction and Separation Studies |
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| 摘要: 用Na2S·9H2O和1-溴丁烷合成了二丁基硫醚(简写为M)。以二丁基硫醚为萃取剂进行了钯、铂萃取分离的研究，并采用正交实验，得出了钯、铂分离的最佳条件为cM=0.344 mol·L-1，O/A=1∶1，t=6 min，cH+=2 mol·L-1。测得二丁基硫醚萃取钯的容量大于17 g·L-1 |
| 关键词: 二丁基硫醚 萃取 钯 铂 分离 |
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| Abstract: Dibutyl sulfide (abbreviated as M) was synthesized with Na2S·9H2O and n-butyl bromide. The performance for extraction and separation of palladium and platinum was studied and the optimum conditions for separation of Pd and Pt were 0.344 mol·L-1 for dibutyl sulfide, 1∶1 for Organic/Aqueous phase ratio(O/A), 6 min extraction and 2 mol·L-1 H+ in aqueous phase as obtained by rhombic experiments. The capacity of palladium extraction was determined with dibutyl sulfide to be exceeded 17 g·L-1. The possible mechanism of palladium extraction with dibutyl sulfide was also studied. The extraction equation was ascertained and signified as PdCl42- + 2M → PdCl2·2M + 2Cl-. Palladium could be stripped effectively by ammonia of 9 mol·L-1, and the palladium stripped was 96.3%. Platinum could be stripped by sodium chloride, the percentage stripping of platinum was 88.9% when concentration of sodium chloride was 12 g·L-1. The optimum conditions of separating palladium and platinum were verified with mixed solution containing [PdCl4]2-, [PtCl6]2-, Cu2+, Fe2+ and Ni2+. |
| Keywords: dibutyl sulfide extraction palladium platinum separation |
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| 潘路,古国榜,王凤武,魏亦军.二丁基硫醚的合成及其萃取分离钯、铂的研究[J].无机化学学报,2008,24(4):520-526. |
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