Interfacial activity of 4-alkylphenylamines and the rate of palladium(II) extraction |
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Authors: | Maciej Wisniewski Jan Szymanowski Wladyslaw Walkowiak Malgorzata Michalewska |
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Abstract: | Interfacial tension isotherms were determined in hydrocarbon-water systems for 4-alkylphenylamines containing from 6 to 16 carbon atoms in their alkyl chains, and the surface excess isotherms were computed and interpreted using various adsorption isotherms. Palladium(II) was extracted with 4-alkylphenylamines from 3 M HCI solutions. The maximum extraction rate of palladium(II) is observed for 4-decyl- and 4-dodecylphenylamines which exhibit good interfacial activity. Compounds soluble in the aqueous phase (4-hexylphenylamine) or in toluene (4-hexadecylphenylamine) extract palladium(II) slower than 4-decyl- and 4-dodecyl- phenylamines. |
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Keywords: | palladium(II) extraction 4-alkylphenylanines surface activity kinetics |
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