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Interfacial activity of 4‐alkylphenylamines and the rate of palladium(II) extraction
Author(s) -
Wisniewski Maciej,
Szymanowski Jan,
Walkowiak Wladyslaw,
Michalewska Malgorzata
Publication year - 1992
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/jctb.280530305
Subject(s) - palladium , toluene , alkyl , adsorption , surface tension , extraction (chemistry) , chemistry , aqueous solution , hydrocarbon , aqueous two phase system , phase (matter) , carbon fibers , inorganic chemistry , organic chemistry , materials science , thermodynamics , catalysis , physics , composite number , composite material
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.