Extraction of ruthenium and its separation from rhodium and palladium with 4-pyridone derivatives

Drušković, Vinka; Vojković, Vlasta; Antonić, Tatjana (2005) Extraction of ruthenium and its separation from rhodium and palladium with 4-pyridone derivatives. Croatica Chemica Acta, 78 (4). pp. 617-626. ISSN 0011-1643

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Abstract

Formation of a yellow chelate complex of ruthenium(111) with 3-hydroxy-2-methyl-1-phenyl-4-pyridone or 3-hydroxy-2-methyl-1-(4-tolyl)-4-pyridone in the aqueous phase and extraction of the chelates in dichloromethane were used for spectrophotometric determination of ruthenium. Beer's law was obeyed over the concentration range of 0.1-20.0 mu g cm(-3) ruthenium. Molar absorptivity was 1.35 x 10(4) mol(-1) dm(3) cm(-1) (organic phase, at 393 nm) and 1.29 x 10(4) mol(-1) dm(3) cm(-1) (aqueous phase, at 367 nm), irrespective of the reagent used. The method was successfully applied to the determination of ruthenium in synthetic mixtures. Extraction of a chelate complex of ruthenium(111) with 3-hydroxy-2-methyl-l-phenyl-4-pyridone proved to be a simple and efficacious method for the separation of ruthenium(III) from large amounts of palladium(II) and rhodium(111).

Item Type:	Article
Uncontrolled Keywords:	extraction; gama-pyridone; palladium; rhodium; ruthenium; separation; spectrophotometry; solid-phase extraction; microcrystalline p-dichlorobenzene; hydrobromic acid solutions; spectrophotometric determination; solvent-extraction; polyurethane foam; platinum metals; trace amounts; 3-hydroxy-2-methyl-1-(4-tolyl)-4-pyridone; 3-hydroxy-2-methyl-1-phenyl-4-pyridone
Subjects:	NATURAL SCIENCES > Chemistry
Divisions:	Division of Materials Chemistry
Projects:	Project title Project leader Project code Project type Analiticki sustavi - razvoj pristupa i metoda Zlatko Meić 0119641 MZOS
Depositing User:	Tatjana Antonić Jelić
Date Deposited:	31 Oct 2013 10:56
URI:	http://fulir.irb.hr/id/eprint/879

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