Vapour-liquid and liquid-solid equilibria in the system Th(NO3)(4)-UO2(NO3)(2)-HNO3-H2O

Authors
Volk, VI Vakhrushin, AY Mamaev, SL Zhirnov, YP
Citation
Vi. Volk et al., Vapour-liquid and liquid-solid equilibria in the system Th(NO3)(4)-UO2(NO3)(2)-HNO3-H2O, J RAD NUCL, 246(3), 2000, pp. 703-708
Citations number
16
Categorie Soggetti
Inorganic & Nuclear Chemistry
Journal title
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
ISSN journal
02365731 → ACNP
Volume
246
Issue
3
Year of publication
2000
Pages
703 - 708
Database
ISI
SICI code
0236-5731(200012)246:3<703:VALEIT>2.0.ZU;2-4
Abstract
Vapour-liquid and liquid-solid equilibria were studied in the system Th(NO3 )(4)-UO2(NO3)(2)-HNO3-H2O. Hexahydrate of thorium nitrate as well as hexa- and trihydrate of uranyl nitrate were supposed to be formed in this system. Empiric equations of solubility isotherms were derived for 25 degreesC and liquid phase densities were determined. It was established that nitric aci d was salted out into the vapour phase by the nitrates present in the syste m both separately and simultaneously. Empiric equation was derived that des cribes the relationship between the HNO3 concentration of condensate and th at of all liquid phase components.