Thermodynamic study of the gaseous thorium carbides, ThC, ThC/sub 2/, ThC/sub 3/, ThC/sub 4/, ThC/sub 5/, and ThC/sub 6/
Six gaseous carbides of thorium, ThC/sub n/(n=1--6), have been identified in a Knudsen effusion mass spectrometric investigation of the vapor phase above a thorium--uranium--rhodium--graphite system at high temperatures. The partial pressures of the thorium containing species were measured as a function of temperature in the 2300--2700 /sup 0/K range. Third law enthalpies for the reactions Th(g)+nC(graphite) =ThC/sub n/, n=1 to 6, and of various other homogeneous and heterogeneous reactions were evaluated. By combining the experimental enthalpies with appropriate thermodynamic data taken from literature, the following values for the atomization energies ..delta..H /sup 0//sub at,298/, and standard heats of formation ..delta..H/sup tsdegree//sub f/,298 of thorium carbides have been derived:
- Research Organization:
- Department of Chemistry, Texas AM University, College Station, Texas 77843
- OSTI ID:
- 5484856
- Journal Information:
- J. Chem. Phys.; (United States), Vol. 72:4
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
THORIUM CARBIDES
THERMOCHEMICAL PROCESSES
THERMODYNAMIC PROPERTIES
FORMATION HEAT
KNUDSEN FLOW
MASS SPECTROSCOPY
VERY HIGH TEMPERATURE
ACTINIDE COMPOUNDS
CARBIDES
CARBON COMPOUNDS
ENTHALPY
FLUID FLOW
GAS FLOW
PHYSICAL PROPERTIES
REACTION HEAT
SPECTROSCOPY
THORIUM COMPOUNDS
640302* - Atomic
Molecular & Chemical Physics- Atomic & Molecular Properties & Theory