COMPONENT RELATIONSHIPS WITHIN TWO-PHASE GASOLINE/METHANOL/WATER SYSTEMS
Experimental data were derived from selected two-phase gasoline/methanol/water systems specifically to gain a better understanding of the phase relationships of these mixtures, to establish more firmly the severity of the phase-separation problem, and to devise a methodology applicable to future studies of gasoline/methanol blends for use as automotive fuels. Two-phase samples were allowed to equilibrate at constant temperature, and the methanol and water content of each phase was determined; thus, phase compositions in terms of solvent, solute, and diluent (gasoline, methanol, and water, respectively) were established. Partition and mutual solubility relationships were then established from these data. The lower "water-rich" phase of a separated gasoline/methanol/water mixture is not usable as a fuel in current-production automobiles without engine adjustments. Generally speaking, increasing mixture temperature or adding the cosolvent, 1-hexanol, produces favorable equilibrium shifts for methanol and water by increasing their solubility in the upper"gasoline-rich" phase. Partition coefficient interrelationships offer a comparatively simple and reliable route to two-phase gasoline/methanol/water systems description.
Bartlesville Energy Technology CenterDepartment of Energy
Bartlesville, OK United States 74003
- Cox, F W
- Publication Date: 1979-2
- Pagination: 52 p.
- TRT Terms: Blends; Dilution; Dissolution; Fuels; Gasoline; Methanol; Solubility; Solvents; Temperature; Water
- Uncontrolled Terms: Solutes
- Old TRIS Terms: Diluents; Partition; Phase studies
- Subject Areas: Energy; Highways;
- Accession Number: 00192279
- Record Type: Publication
- Source Agency: National Technical Information Service
- Files: TRIS
- Created Date: Jul 31 1979 12:00AM