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.

  • Corporate Authors:

    Bartlesville Energy Technology Center

    Department of Energy
    Bartlesville, OK  United States  74003
  • Authors:
    • Cox, F W
  • Publication Date: 1979-2

Media Info

  • Pagination: 52 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00192279
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Files: TRIS
  • Created Date: Jul 31 1979 12:00AM