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Complexation of tho...
Complexation of thorium with phosphate
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- Ekberg, Christian, 1967 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Knutsson, Andreas, 1972 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Albinsson, Yngve, 1957 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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Brown, P. L. (författare)
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(creator_code:org_t)
- 2010-12-16
- 2011
- Engelska.
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Ingår i: Radiochimica Acta. - : Walter de Gruyter GmbH. - 0033-8230. ; 99:1, s. 31-35
- Relaterad länk:
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http://dx.doi.org/10...
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https://research.cha...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Using liquid-liquid extraction and the AKUFVE-technique developed by the Nuclear Chemistry Department at Chalmers University of Technology, Sweden, the complex formation equilibria of hydrogen phosphate (HPO 4 2- ) with thorium have been studied at different temperatures (15, 25 and 35 °C), varying pH (7, 8 and 8.7) and in 1 M (Na, H)ClO 4 . Evaluation of the acquired solvent extraction data indicated the formation of the ThHPO 4 2+ , Th(HPO 4 ) 2 (aq) and Th(HPO 4 ) 3 2- complexes. For Th(HPO 4 ) 2 (aq) and Th(HPO 4 ) 3 2- , the logarithm of the stability constants obtained at 25 °C were 17.0 ±3.5 and 23.7 ±0.2, respectively. Only an estimate of the stability of ThHPO 4 2+ could be obtained. Enthalpies and entropies of the complex formation reactions have been determined: Th(HPO 4 ) 2 (aq) (ΔH = 698 ± 27kJmol -1 , ΔS = 2669±91 Jmol -1 K -1 ) and Th(HPO 4 ) 3 2- (ΔH = 499 ±4kJmol -1 , ΔS = 2137 ± 12 Jmol -1 K -1 ). © by Oldenbourg Wissenschaftsverlag, München.
Ämnesord
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
Nyckelord
- AKUFVE
- Thorium
- Phosphate
- Solvent extraction
- Stability constants
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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