Enthalpies of formation of rare earths and actinide(III) hydroxides: Their acid-base relationships and estimation of their thermodynamic properties

Conference · Tue Jan 01 00:00:00 EST 1991

OSTI ID:6065361

Morss, L R; Williams, C W

This paper reviews the literature on rare earth(III) and actinide(III) hydroxide thermodynamics, in particular the determination of their enthalpies of formation at 25{degree}C. The hydroxide unit-cell volumes, lanthanide/actinide ion sizes, and solid-solution stability trends have been correlated with a generalized acid-base strength model for oxides to estimate properties for heterogeneous equilibria that are relevant to nuclear waste modeling and to characterization of potential actinide environmental interactions. Enthalpies of formation and solubility-product constants of actinide(III) hydroxides are estimated.

• Research Organization: Argonne National Lab., IL (United States)
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6065361
• Report Number(s): ANL/CP-74763; CONF-911109-7; ON: DE92005235
• Resource Relation: Conference: Fall meeting of the European Materials Research Society, Strasbourg (France), 5-8 Nov 1991
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
36 MATERIALS SCIENCE
HYDROXIDES
THERMODYNAMIC PROPERTIES
OXIDES
PH VALUE
ACTINIDE COMPOUNDS
FORMATION HEAT
REVIEWS
SOLUBILITY
TRANSITION ELEMENT COMPOUNDS
TRIGONAL LATTICES
CHALCOGENIDES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DOCUMENT TYPES
ENTHALPY
HYDROGEN COMPOUNDS
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
REACTION HEAT
400201* - Chemical & Physicochemical Properties
400702 - Radiochemistry & Nuclear Chemistry- Properties of Radioactive Materials
360204 - Ceramics
Cermets
& Refractories- Physical Properties