Solvent extraction separation of niobium (V), tantalum (V) or titanium (IV), and vanadium (V) by 2'-hydroxy-4-methoxy-5'-methyl chalkone oxime (HMMCO) from their binary mixtures

Journal Article · Tue Jan 01 04:00:00 EST 1980 · Sep. Sci. Technol.; (United States)

DOI:https://doi.org/10.1080/01496398008055624· OSTI ID:6206845

Gholse, S B; Kharat, R B

2'-Hydroxy-4-methoxy-5'-methyl chalkone oxime (HMMCO) has been used for the solvent extraction separation of Nb(V), Ta(V) or Ti(IV), and V(V) from their binary mixtures. V(V) can be quantitatively extracted with HMMCO from 9 M hydrochloric acid. The green-colored chloroform extractable V(V)-HMMCO complex absorbs at a maximum at 630 nm. Nb(V), Ta(V), and Ti(IV) are not extracted at these conditions. However, these metals can be extracted from strong hydrochloric acid medium in the presence of potassium thiocyanate. The yellow-colored complexes of Nb(V), Ta(V), and Ti(IV) absorb at a maximum at 380, 390 and 390 nm, respectively. The method is simple, rapid, and selective, and affords a clean-cut separation of vanadium from niobium, tantalum, or titanium which are usually present in alloys and ores. 3 tables.

• Research Organization: Nagpur Univ., India
• OSTI ID: 6206845
• Journal Information: Sep. Sci. Technol.; (United States), Journal Name: Sep. Sci. Technol.; (United States) Vol. 15:10; ISSN SSTED
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400104 -- Spectral Procedures-- (-1987)
400105* -- Separation Procedures
AMINES
COMPLEXES
ELEMENTS
EXTRACTION
HYDROCHLORIC ACID
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
INORGANIC ACIDS
METALS
NIOBIUM
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXIMES
REFRACTORY METALS
SEPARATION PROCESSES
SOLVENT EXTRACTION
SPECTROPHOTOMETRY
TANTALUM
TITANIUM
TRANSITION ELEMENTS
VANADIUM