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

Authors
Volk, VI Vakhrushin, AY Mamaev, SL Zhirnov, YP
Citation
Vi. Volk et al., Equilibria liquid-vapor and liquid-solid in the Th(NO3)(4)-UO2(NO3)(2)HNO3-H2O system, RADIOCHEMIS, 41(3), 1999, pp. 225-229
Citations number
17
Categorie Soggetti
Inorganic & Nuclear Chemistry
Journal title
RADIOCHEMISTRY
ISSN journal
10663622 → ACNP
Volume
41
Issue
3
Year of publication
1999
Pages
225 - 229
Database
ISI
SICI code
1066-3622(199905/06)41:3<225:ELALIT>2.0.ZU;2-R
Abstract
Equilibria liquid-vapor and liquid-solid in the Th(NO3)(4)-UO2(NO3)(2)-HNO3 -H2O systems were studied. Thorium nitrate hexahydrate and uranyl nitrate t etra- and hexahydrates are formed in this system. Empirical relations descr ibing the solubility isotherm at 25 degrees C were established. The densiti es of the liquid phases were determined. Thorium and uranyl nitrates, prese nt both separately and simultaneously, salt out nitric acid into the vapor phase. An empirical equation was obtained describing relation of the nitric acid concentration in the condensate with the concentrations of all the co mponents of the liquid phase.