Sulfonic acids: catalysts for the liquid-liquid extraction of metals
Journal Article
·
· Sep. Sci. Technol.; (United States)
Three sulfonic acid extractants, dinonylnaphthalene sulfonic acid (HDNNS), didodecylnaphthalene sulfonic acid (HDDNS) and di-(2-ethyl-hexyl) sodium sulfosuccinate (Aerosol OT, AOT) are compared as to their effects on the extraction of nickel with LIX63. The acidic extractants interact synergistically with the oxime. Interfacial tension results are presented which demonstrate that the sulfonates form reversed micelles in non-polar organic solvents. It is proposed that the reversed micelles catalyze the extraction by specific solubilization of both the metal and the extractant, resulting in an increase in the interfacial concentration of the reacting species. The ability of LIX63 to chelate with nickel without deprotonating permits the synergism to occur at low pH.
- Research Organization:
- Pennsylvania State Univ., University Park
- OSTI ID:
- 6874822
- Journal Information:
- Sep. Sci. Technol.; (United States), Journal Name: Sep. Sci. Technol.; (United States) Vol. 15:4; ISSN SSTED
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400105* -- Separation Procedures
ALKALI METAL COMPOUNDS
ALKANES
AMINES
CARBOXYLIC ACID SALTS
CATALYTIC EFFECTS
COMPARATIVE EVALUATIONS
COMPLEXES
ELEMENTS
EXTRACTION
HEXANE
HYDROCARBONS
HYDROXY COMPOUNDS
METALS
NICKEL
NICKEL COMPLEXES
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXIMES
SEPARATION PROCESSES
SODIUM COMPOUNDS
SOLVENT EXTRACTION
SULFONIC ACIDS
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENTS
400105* -- Separation Procedures
ALKALI METAL COMPOUNDS
ALKANES
AMINES
CARBOXYLIC ACID SALTS
CATALYTIC EFFECTS
COMPARATIVE EVALUATIONS
COMPLEXES
ELEMENTS
EXTRACTION
HEXANE
HYDROCARBONS
HYDROXY COMPOUNDS
METALS
NICKEL
NICKEL COMPLEXES
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXIMES
SEPARATION PROCESSES
SODIUM COMPOUNDS
SOLVENT EXTRACTION
SULFONIC ACIDS
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENTS