Thermal conductivity measurements and molecular association in a series of alcohol vapors: methanol, ethanol, isopropanol, and t-butanol. [Temperature and pressure dependence]
Thermal conductivity measurements on the vapors of methanol, ethanol, isopropanol, and t-butanol are reported as a function of temperature (330 to 420/sup 0/K) and pressure 911 to 240 kPa). The thermal conductivity versus pressure isotherms for all four alcohols exhibit upward curvatures at the lower temperatures and nearly linear increases at higher temperatures. This behavior is indicative of a dimeric species and one or more polymeric clusters in the vapor in addition to the monomer. Quantum mechanical calculations have indicated that tetramers are the most likely polymeric species. Detailed analyses of the data provide thermodynamic data (..delta..H,..delta..S) for the dimerization and tetramerization reactions and show interesting correlations with the size of the monomer unit.
- Research Organization:
- Argonne National Lab., IL
- OSTI ID:
- 6217922
- Journal Information:
- Int. J. Thermophys.; (United States), Journal Name: Int. J. Thermophys.; (United States) Vol. 2:2; ISSN IJTHD
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
10 SYNTHETIC FUELS
ALCOHOLS
BUTANOLS
DATA
ETHANOL
EXPERIMENTAL DATA
HYDROXY COMPOUNDS
INFORMATION
METHANOL
NUMERICAL DATA
ORGANIC COMPOUNDS
PHYSICAL PROPERTIES
PRESSURE DEPENDENCE
PROPANOLS
TEMPERATURE DEPENDENCE
THERMAL CONDUCTIVITY
THERMODYNAMIC PROPERTIES
THERMODYNAMICS