Published July 1995
| Version v1
Journal article
The influence of temperature on scandium extraction from sulfuric acid solutions with organophosphorus extractants
Description
In the temperature range 10-65 deg C effect of temperature on scandium extraction from sulfuric acid solutions (0.1-8 mol'l) by di-2-ethylhexylphosphoric acid, poly-2-ethylhexylphosphonitrilic acid and tributylphosphate has been studied. It is established that scandium extraction in this system in wide pH range with temperature growth usually decreases or isooccompanied by minimal thermal effects (-Δ = 0-4.8 kcal/mol). Only in low acidic region (∼ 0.1 mol/l H2SO4) certain increase of scandium distribution coefficients with temperature growth takes place; it relates with dominant effect of cation exchange extraction of scandium in the given conditions. 8 refs.; 5 tabs
Additional details
Additional titles
- Original title (Russian)
- Vliyanie temperatury na ehkstraktsiyu skandiya fosfororganicheskimi ehkstragentami iz sernokislykh rastvorov
Publishing Information
- Journal Title
- Zhurnal Neorganicheskoj Khimii
- Journal Volume
- 40
- Journal Issue
- 7
- Journal Page Range
- p. 1225-1228.
- ISSN
- 0044-457X
- CODEN
- ZNOKAQ
INIS
- Country of Publication
- Russian Federation
- Country of Input or Organization
- Russian Federation
- INIS RN
- 27012895
- Subject category
- S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
- Descriptors DEI
- AQUEOUS SOLUTIONS; CONCENTRATION RATIO; DISTRIBUTION FUNCTIONS; PH VALUE; PHOSPHORIC ACID ESTERS; SCANDIUM COMPLEXES; SOLVENT EXTRACTION; SULFURIC ACID; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 0273-0400 K; THERMODYNAMIC PROPERTIES
- Descriptors DEC
- COMPLEXES; DISPERSIONS; ESTERS; EXTRACTION; HOMOGENEOUS MIXTURES; HYDROGEN COMPOUNDS; INORGANIC ACIDS; INORGANIC COMPOUNDS; MIXTURES; ORGANIC COMPOUNDS; ORGANIC PHOSPHORUS COMPOUNDS; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; SEPARATION PROCESSES; SOLUTIONS; SULFUR COMPOUNDS; TEMPERATURE RANGE; TRANSITION ELEMENT COMPLEXES