CO-ADSORPTION AND RATE OF EXTRACTION IN A COPPER CHLORIDE SYSTEM CONTAINING DECANOL AND HYDROPHOBIC PYRIDINE ACID DERIVATIVES
CO-ADSORPTION AND RATE OF EXTRACTION IN A COPPER CHLORIDE SYSTEM CONTAINING DECANOL AND HYDROPHOBIC PYRIDINE ACID DERIVATIVES
复制标题
含有癸醇和疏水吡啶酸衍生物的氯化铜体系中的共吸附和萃取率
DOI：
10.1080/07366290008934693
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发表时间：
2000
期刊：
影响因子：
--
通讯作者：
A. Borowiak
中科院分区：
文献类型：
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作者：
K. Prochaska;R. Cierpiszewski;A. Jakubiak;A. Borowiak
合成了模型化合物吡啶-3，5-二甲酸二（2-乙基己基）酯和N，N，N '，N'-四己基吡啶-3，5-二甲酰胺，并研究了它们从氯化物溶液中萃取铜（II）的性能。研究了正癸醇作为改进剂对铜萃取的影响。在甲苯/水界面处的界面张力测量的系统包含的个别萃取剂和它们的混合物与癸醇。结果发现，癸醇的影响在甲苯/水界面的混合吸附层的组成。然而，癸醇仅显著降低用吡啶-3，5-二甲酸二-2-乙基己酯萃取铜的速率。该效应在高浓度的酯下消失，并且对于N，N，N ′，N ′-四己基吡啶-3，5-二甲酰胺几乎可以忽略不计，其与酯相比显示出显著更高的萃取能力。
ABSTRACT The model compounds di-2-ethylhexyl pyridine-3,5-dicarboxylate and N,N,N',N'-tetrahexyl pyridine-3,5-dicarboxamide were synthesised and their copper(II) extraction properties from chloride solutions were described. The effect of decanol used as a modifier on copper extraction was studied. The interfacial tension at the toluene/water interface was measured for systems containing the individual extractants and their mixtures with decanol. It was found that decanol affects the composition of the mixed adsorbed layer at the toluene/water interface. However, decanol significantly decreases only the rate of copper extraction with di-2-ethylhexyl pyridine-3,5-dicarboxylate. The effect disappears at high concentrations of the ester and is almost negligible for N,N,N',N'-tetrahexylpyridine-3,5-dicarbox-amide, which shows significantly higher extraction ability in comparison to the ester.