Thermodynamic and transport properties for polar coal mixtures. Technical progress report, July 1-September 30, 1985
The measured values, the infinite dilution activity coefficients at 60/sup 0/C are presented in Table 1. For most polar solutes such as acetone, the values are slightly lower than the corresponding values measured previously for 1-methyl-naphthalene at 60/sup 0/C. For tetrahydrofuran and chloroform, the activity coefficients are less than 1.0, apparently because of association effects for these molecules. The vapor-liquid equilibrium data of Weissenberger et al. (1,2) at 20/sup 0/C indicate that the activity coefficients are greater than 1.0 for tetralin mixtures with methyl acetate, ethyl acetate, acetone, ethyl alcohol, benzene, and n-hexane, and less than 1.0 for mixtures with chloroform. For most polar solutes the values decrease slightly with decreasing temperature, as shown in Figure 1 for acetone. For n-hexane, the values increase slightly with decreasing temperature as shown in Figure 2. Similar measurements are being obtained for m-cresol and other coal liquids. The calculated values of heat of mixing for n-alkanes with pyridine are lower than the experimental values of Woycicka (5) as shown in Figure 5 for n-heptane-pyridine at 293.15/sup 0/K. However, it can be seen from this figure that the calculated values for this system are in closer agreement with the data of Timofeev (6). The calculated values of the heat of mixing are also in good agreement with the data of Konakbaeva (6) for pyridine-iso-octane at 288.15/sup 0/K, as shown in Figure 6. 9 refs., 7 figs.
- Research Organization:
- Polytechnic Inst. of New York, Brooklyn (USA)
- DOE Contract Number:
- FG22-84PC70790
- OSTI ID:
- 6418015
- Report Number(s):
- DOE/PC/70790-T4; ON: DE86002809
- Country of Publication:
- United States
- Language:
- English
Similar Records
Thermodynamic and transport properties for coal mixtures. Technical progress report, January 1, 1985-March 31, 1985. [Methyl ethyl ketone, methyl acetate, ethyl acetate]
Thermodynamic and transport properties for polar coal mixtures. Technical progress report, July 15-December 31, 1984
Related Subjects
010405 -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
010600* -- Coal
Lignite
& Peat-- Properties & Composition
ALKANES
AROMATICS
AZINES
COAL LIQUIDS
DATA
DISPERSIONS
ENTHALPY
EQUILIBRIUM
EXPERIMENTAL DATA
FLUIDS
GASES
HEPTANE
HETEROCYCLIC COMPOUNDS
HYDROCARBONS
INFORMATION
LIQUIDS
MIXING HEAT
MIXTURES
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PHYSICAL PROPERTIES
PYRIDINE
PYRIDINES
TETRALIN
THERMODYNAMIC PROPERTIES
VAPORS