Published 1985
| Version v1
Journal article
The extraction of molybdenum(VI) from perchloric acid solution by tri-n-butyl phosphate
Description
The extraction of molybdenum(VI) by tri-n-butyl phosphate (TBP) from 1 M NaClO4 medium has been investigated as a function of molybdenum concentration (10-4 to 10-2 M) in the pHsub(c) range 0.7 to 3.2. At molybdenum(VI) concentration > approx. 5 x 10-4 M a polynuclear species, which has been identified as the Mo6O192- ion, predominates in the TBP phase. At very low molybdenum(VI) concentration (< 10-4 M) mononuclear species predominate. A conditional formation constant for the hexanuclear species in the organic phase (0.15 M HClO4) has been determined, i.e. K = (1.3 +- 0.4) x 1020. (author)
Additional details
Publishing Information
- Journal Title
- Polyhedron
- Journal Volume
- 4
- Journal Issue
- 4
- Series
- Polyhedron.
- Journal Page Range
- 545-550
- ISSN
- 0277-5387
INIS
- Country of Publication
- United Kingdom
- Country of Input or Organization
- United Kingdom
- INIS RN
- 16056967
- Subject category
- S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
- Descriptors DEI
- ABSORPTION SPECTRA; AQUEOUS SOLUTIONS; CHEMICAL REACTION KINETICS; DISTRIBUTION FUNCTIONS; MOLYBDATES; MOLYBDENUM; MOLYBDENUM COMPLEXES; PERCHLORIC ACID; PH VALUE; SOLVENT EXTRACTION; TBP; ULTRAVIOLET SPECTRA
- Descriptors DEC
- BUTYL PHOSPHATES; CHLORINE COMPOUNDS; COMPLEXES; DISPERSIONS; ELEMENTS; ESTERS; HALOGEN COMPOUNDS; HOMOGENEOUS MIXTURES; HYDROGEN COMPOUNDS; INORGANIC ACIDS; KINETICS; METALS; MIXTURES; MOLYBDENUM COMPOUNDS; ORGANIC COMPOUNDS; ORGANIC PHOSPHORUS COMPOUNDS; OXYGEN COMPOUNDS; PHOSPHORIC ACID ESTERS; REACTION KINETICS; SEPARATION PROCESSES; SOLUTIONS; SPECTRA; TRANSITION ELEMENT COMPLEXES; TRANSITION ELEMENT COMPOUNDS; TRANSITION ELEMENTS