Published 1999
| Version v1
Miscellaneous
Open
Solvent Extraction and Separation of Chromium(III) and (V I) in Aqueous Solutions with Trioctylphosphine Oxide
Creators
- 1. Department of Chemistry, Science University of Tokyo 1-3 Kagurazaka, Shinjuku-ku, Tokyo (Japan)
Description
The solvent extraction of chromium(III) and (V I) in aqueous solutions with a solvating type extractant, trioctylphosphine oxide(TOPO), in hexane is studied. Kinetically inert Cr3+ is extracted from 1 mol dm-3 sodium perchlorate solution very quickly and quantitatively as Cr(H2 O · TOPO) 63+(CIO4-)3. Chromium(V I) in hydrochloric acid is extracted effectively as the H2CrO$(H CI)n centre dot TOPOm species ( m = 2 or 3, n = 0 to 2) and the distribution ratio increased by an increase in the acid concentration. From these, a procedure is proposed for the extraction of both chromium(V I) and chromium(III) in aqueous solution separately with 0.1 mol dm-3 TOPO in hexane
Files
31026757.pdf
Files
(263.4 kB)
| Name | Size | Download all |
|---|---|---|
|
md5:95c9a65bd5af35510ba05b48cd402ef9
|
263.4 kB | Preview Download |
Additional details
Publishing Information
- Imprint Title
- Proceedings of the international conference on hazardous waste sources, effects and management
- Imprint Pagination
- 1555 p.
- Journal Page Range
- p. 817-826
- Report number
- INIS-EG--165(v.1,2,3)
Conference
- Title
- International conference on hazardous waste sources, effects and management
- Dates
- 12-16 Dec 1998
- Place
- Cairo (Egypt)
INIS
- Country of Publication
- Egypt
- Country of Input or Organization
- Egypt
- INIS RN
- 31026757
- Subject category
- S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- AQUEOUS SOLUTIONS; CHROMIUM IONS; SEPARATION PROCESSES; SOLVENT EXTRACTION; TOPO
- Descriptors DEC
- CHARGED PARTICLES; DISPERSIONS; EXTRACTION; IONS; MIXTURES; ORGANIC COMPOUNDS; ORGANIC PHOSPHORUS COMPOUNDS; PHOSPHINE OXIDES; SEPARATION PROCESSES; SOLUTIONS