Miscibility in systems containing aqueous solutions of various alkylbenzenesulfonates, toluene and, n-butanol
Miscibility relationships in four-component systems containing sodium alkylbenzenesulfonates, toluene, n-butanol, and water were studied at 25/sup 0/C in the hope of clarifying the complex systems used in the micellar flood enhanced oil recovery process. Phase boundary curves for the pseudo three-component systems (constant sulfonate/water ratios, 2.5 moles sulfonate per kg water) were determined. The sulfonates included those of benzene, toluene, xylene, ethylbenzene, isopropylbenzene, mesitylene, cymene, methyl-t-butylbenzene, and diisopropylbenzene, in all of which the alkyl substituents are smaller than in the usual surfactants. The phase boundary curves have similar and fairly symmetrical shapes. The amount of n-butanol (cosolvent) required to produce miscibility decreases with increasing number of alkyl carbons on the benzene ring of the sulfonates and seems relatively independent of the isomeric structure. The sodium salt of diisopropylbenzenesulfonate gives the lowest phase boundary curve (least n-butanol required for miscibility) among the nine sulfonates studied.
- Research Organization:
- Oak Ridge National Lab., TN
- DOE Contract Number:
- W-7405-ENG-26
- OSTI ID:
- 6255534
- Journal Information:
- J. Colloid Interface Sci.; (United States), Vol. 70:3
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
02 PETROLEUM
BENZENE
PHASE STUDIES
SOLUBILITY
PETROLEUM SULFONATES
SODIUM COMPOUNDS
SULFONATES
TOLUENE
WATER
CYMENE
EXPERIMENTAL DATA
MESITYLENE
MICELLAR SYSTEMS
MICROEMULSION FLOODING
XYLENES
ALKALI METAL COMPOUNDS
AROMATICS
DATA
ESTERS
FLUID INJECTION
HYDROCARBONS
HYDROGEN COMPOUNDS
INFORMATION
MISCIBLE-PHASE DISPLACEMENT
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXYGEN COMPOUNDS
SULFONIC ACID ESTERS
400301* - Organic Chemistry- Chemical & Physicochemical Properties- (-1987)
020300 - Petroleum- Drilling & Production