Thermodynamic study of CO/sub 2/-organic compound interaction at high pressures and temperatures. Progress report, 15 September 1982-15 March 1985. [(Propane + CF/sub 2/Cl/sub 2/), (CO/sub 2/ + pyridine), (CHF/sub 2/Cl + N,N-dimethylacetamide), (CHF/sub 2/Cl + 2,3 dimethylbutane), (CF/sub 2/Cl/sub 2/ + N,N-dimethylacetamide), (CF/sub 2/Cl/sub 2/ + ethane)]
The overall objective of this research program is to gain increased understanding of the energetics associated with chemical and physical interactions involving supercritical fluids. Emphasis has been placed on reactions involving CO/sub 2/, Freons, and hydrocarbons. Our approach to the accomplishment of this objective has been first, to measure heats of mixing (H/sup E/) for selected binary systems at temperatures and pressures in the vicinity of the critical points of one or both of the components. These experimental H/sup E/ data are incorporated into appropriate equations of state or modified equations of state in order to describe the variations in H/sup E/ with temperature and pressure. This process allows us to gain insight into the origin of the energy changes which occur. Since the energy changes are large and occur over a few degrees in some cases, the ability to predict them is necessary in designing equipment for use in carrying out supercritical fluid processes. In addition, H/sup E/ data in critical regions provide an excellent test for the validity of the equations used to describe these data. Several systems which illustrate these principles are presented and discussed in this report. These systems are (propane + CF/sub 2/Cl/sub 2/), (CO/sub 2/ + pyridine), (CHF/sub 2/Cl + N,N-dimethylacetamide). (CHF/sub 2/Cl + 2,3 dimethylbutane), (CF/sub 2/Cl/sub 2/ + N,N-dimethylacetamide), and (CF/sub 2/Cl/sub 2/ + ethane). 26 refs., 5 figs., 2 tabs.
- Research Organization:
- Brigham Young Univ., Provo, UT (USA)
- DOE Contract Number:
- AC02-82ER13024
- OSTI ID:
- 5700836
- Report Number(s):
- DOE/ER/13024-T2; ON: DE85010999
- Resource Relation:
- Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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Thermodynamic study of CO/sub 2/-organic compound interaction at high pressures and temperatures. Progress report, 15 September 1982-30 June 1984
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
BINARY MIXTURES
MIXING HEAT
AMIDES
CARBON DIOXIDE
CHLORINATED ALIPHATIC HYDROCARBONS
EQUATIONS OF STATE
ETHANE
FLUORINATED ALIPHATIC HYDROCARBONS
FREONS
MEDIUM PRESSURE
MEDIUM TEMPERATURE
PROPANE
PYRIDINE
SUPERCRITICAL GAS EXTRACTION
TEMPERATURE DEPENDENCE
ALKANES
AZINES
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
COAL LIQUEFACTION
DISPERSIONS
ENTHALPY
EQUATIONS
EXTRACTION
HALOGENATED ALIPHATIC HYDROCARBONS
HETEROCYCLIC COMPOUNDS
HYDROCARBONS
LIQUEFACTION
MIXTURES
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PYRIDINES
SEPARATION PROCESSES
THERMOCHEMICAL PROCESSES
THERMODYNAMIC PROPERTIES
400301* - Organic Chemistry- Chemical & Physicochemical Properties- (-1987)