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Interfacial activity and rate of palladium(II) extraction with decyl pyridine monocarboxylates
Author(s) -
Wiśniewski Maciej,
Jakubiak Artur,
Szymanowski Jan
Publication year - 1995
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.280630303
Subject(s) - palladium , pyridine , extraction (chemistry) , chemistry , catalysis , protonation , adsorption , phase (matter) , inorganic chemistry , polymer chemistry , organic chemistry , ion
Decyl isonicotiniate and decyl nicotiniate permit a rapid extraction of palladium(II) from its hydrochloride solutions. Decyl picoliniate is not a suitable extractant. 4‐Octylphenylamine can act as a phase transfer catalyst when its concentration in the organic phase is at least 2·5 × 10 −4 M . It seems that the interfacial adsorption of pyridine carboxylates and of 4‐octylphenylamine is not the decisive phenomenon in palladium(II) extraction. The negligible protonation of the pyridine‐type extractants and the phase transfer catalysis explains well the quick extraction of palladium(II) with the commercial and highly hydrophobic extractant ACORGA CLX‐50.