Ab'/> Extraction and separation of palladium(II), platinum(IV), gold(III) and rhodium(III) using piperidine-based extractants
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Extraction and separation of palladium(II), platinum(IV), gold(III) and rhodium(III) using piperidine-based extractants

机译:使用基于哌啶的萃取剂的钯(II),铂(IV),金(III)和铑(III)的提取和分离

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AbstractExtraction of palladium(II) from hydrochloric acid media with novel piperidine-based extractantsN-decylpiperidine (P-C10),N-dodecylpiperidine (P-C12),N-tetradecylpiperidine (P-C14) andN-hexadecylpiperidine (P-C16) has been investigated. Over 90% of palladium(II) from 0.1M HCl solution can be effectively extracted with P-C12, P-C14 and P-C16 in toluene and the extraction equilibrium is achieved after 10min. Increase in HCl concentration has a negative effect on the effectiveness of palladium(II) extraction. From among the examined stripping solutions the most effective are 0.5M aqueous solution of ammonia and 0.1M thiourea in 1M HCl. The percentage of palladium(II) stripped from loaded organic phase (P-C12) reached nearly 100%. Also the selectivity of palladium(II) extraction over rhodium(III), platinum(IV) and gold(III) with the synthesizedN-dodecylpiperidine (P-C12) has been investigated. The selectivity of extraction of palladium(II) over rhodium(III) from 0.1 and 3M HCl with P-C12 was the best. Separation of palladium(II) from platinum(IV) or gold(III) is not so effective and it depends upon the acidity of aqueous solution.N-dodecylpiperidine also shows the extraction ability towards examined noble metal ions in the following order Au(III)>Pd(II)~Pt(IV)Rh(III) from 0.1M HCl and Au(III)>Pt(IV)>Pd(II)Rh(III) from 3M HCl. Palladium(II), platinum(IV) and gold(III) can be successfully separated through stripping from the loaded organic phase.Highlights?Extraction of Pd(II) from acidic media with N-alkylpiperidines is fast and efficient.?The best Pd(II) separation was obtained in the presence of Rh(III) from 0.1M HCl.?The order of extraction ability towards examined noble metals ion from 0.1M HCl is: Au(III)>Pd(II)~Pt(IV)Rh(III).?The order of extraction abaility toward examined noble metals ions from 3M HCl : Au(III)>Pt(IV)>Pd(II)Rh(II).?Pd(II), Pt(IV), Rh(III) and gold(III) can be successfully separated in extraction-stripping process.]]>
机译:<![cdata [ 抽象 从盐酸培养基中提取钯(II)与基于新型哌啶的萃取剂 n < / ce:斜体> - 癸酰哌啶(p-c10), n - 二癸基哌啶(p-c12), n -tadadecylpipheridine(p- C14)和 N - 己二烷基哌啶(P-C16)已经研究过。在0.1M HCl溶液中可以有效地用P-C12,P-C14和P-C16在甲苯中有效地提取超过90%的钯(II),并且在10min之后实现萃取平衡。 HCl浓度的增加对钯(II)提取的有效性产生负面影响。从检查的汽提解决方案中,最有效的是1M HCl中氨水溶液的0.5M氨水和0.1M硫脲。从负载有机相(P-C12)中剥离的钯(II)的百分比达到近100%。还研究了钯(II),铂(III),铂(IV)和金(III)与合成的 N - 二癸基哌啶(P-C12)的选择性的选择性。用P-C12提取钯(II)吡啶(II)吡啶(III)的选择性是最佳的。来自铂(II)或金(III)的钯(II)的分离不是如此有效,取决于水溶液的酸度。 N - 二癸基哌啶还显示出促进的提取能力在下列顺序Au(III)> Pd(II)> Pd(III)中检测贵金属离子,从0.1M HCl和Au(III)> Pt(IV)> Pd(II) RH (iii)3M HCl。钯(II),铂(IV)和金(III)可以通过从负载的有机相中剥离成功分离。 亮点 从N-烷基哌啶的酸性培养基中提取PD(II)的萃取快速有效。 最佳PD(ii)分离是在0.1M HCl的rH(III)存在下获得。 审查的提取能力顺序来自0.1M HCl的BLE金属离子是:Au(III)> Pd(II)〜Pt(IV) RH(III)。 从3M HCl检查贵金属离子的提取施法顺序:au(iii )> pt(iv)> pd(ii) Rh(ii)。 PD(II),PT(IV),RH(III)和金(III)可以在提取剥离过程中成功分离。 ]]>

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