Free energy of formation of Cs sub 3 PuCl sub 6 and CsPu sub 2 Cl sub 7
Conference
·
OSTI ID:7017359
The free energy, enthalpy and entropy of formation of the compounds Cs{sub 3}PuCl{sub 6} and CsPu{sub 2}Cl{sub 7} have been determined by measuring the sublimation pressures for the reactions: CsCl(s) = CsCl(g), 2/5 Cs{sub 3}PuCl{sub 6}(s) = 1/5 CsPu{sub 2}Cl{sub 7}(s) + CsCl(g), and CsPu{sub 2}Cl{sub 7}(s) = 2 PuCl{sub 3}(s) + CsCl(g). The pressures are measured using Knudsen effusion mass spectrometry over the temperature range 600 to 850 K. For the formation of Cs{sub 3}PuCl{sub 6} from CsCl and PuCl{sub 3}, {Delta}G{sub 298}{sup 0} = {minus}77.3 +/{minus} 8.5 kJ/mole, {Delta}H{sub 298}{sup 0} = {minus}82.1 +/{minus} 7.8 kJ mole, and {Delta}S{sup 298}{sup 0} = {minus}16.2 +/{minus} 10.9 J/K mole. For CsPu{sub 2}Cl{sub 7}, {Delta}G{sub 298}{sup 0} = {minus}39.4 +/{minus} 3.5 kJ/mole, {Delta}H{sub 298}{sup 0} = {minus}40.8 +/{minus} 3.2 kJ/mole, and {Delta}S{sub 298}{sup 0} = {minus}4.6 +/{minus} 4.2 J/K mole.
- Research Organization:
- Los Alamos National Lab., NM (United States)
- Sponsoring Organization:
- DOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 7017359
- Report Number(s):
- LA-UR-92-2779; CONF-920887--2; ON: DE92040219
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400201* -- Chemical & Physicochemical Properties
400702 -- Radiochemistry & Nuclear Chemistry-- Properties of Radioactive Materials
ACTINIDE COMPOUNDS
ALKALI METAL COMPOUNDS
CESIUM CHLORIDES
CESIUM COMPOUNDS
CHLORIDES
CHLORINE COMPOUNDS
ENERGY
ENTHALPY
ENTROPY
EVAPORATION
FORMATION FREE ENERGY
FORMATION HEAT
FREE ENERGY
HALIDES
HALOGEN COMPOUNDS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
PLUTONIUM CHLORIDES
PLUTONIUM COMPOUNDS
REACTION HEAT
SUBLIMATION
TEMPERATURE RANGE
TEMPERATURE RANGE 0400-1000 K
THERMODYNAMIC PROPERTIES
TRANSURANIUM COMPOUNDS
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400201* -- Chemical & Physicochemical Properties
400702 -- Radiochemistry & Nuclear Chemistry-- Properties of Radioactive Materials
ACTINIDE COMPOUNDS
ALKALI METAL COMPOUNDS
CESIUM CHLORIDES
CESIUM COMPOUNDS
CHLORIDES
CHLORINE COMPOUNDS
ENERGY
ENTHALPY
ENTROPY
EVAPORATION
FORMATION FREE ENERGY
FORMATION HEAT
FREE ENERGY
HALIDES
HALOGEN COMPOUNDS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
PLUTONIUM CHLORIDES
PLUTONIUM COMPOUNDS
REACTION HEAT
SUBLIMATION
TEMPERATURE RANGE
TEMPERATURE RANGE 0400-1000 K
THERMODYNAMIC PROPERTIES
TRANSURANIUM COMPOUNDS