Solvent Extraction and Ion Exchange · 1991 · 16 citations · 0 references
Natural SciencesChemical EngineeringChemistryAnalytical ChemistryCatalysisSeparation ScienceChemical OxidationOrganic AcidsOxidation-reduction ReactionsRedox ChemistryRedox ProcessesSafer SolventsCarboxylic Acid FormationDiluent EffectsSelective Solvent ExtractionSolvent Extraction Chemistry
ABSTRACT In a series of accelerated tests, using tetradecane as a model diluent, cobalt was shown to catalyse the oxidation of aliphatic solvent extraction diluents to raonocarboxylic acids, i.e. R.CH3------>R.C(0)OH. Impact of carboxylic acid contamination on the cobalt-nickel selectivity obtained with CYANEX®272 is illustrated. Laboratory and plant results are presented to demonstrate the effectiveness of an antioxidant (BHT) in preventing carboxylic acid formation.