Dynamic light scattering measurements of reverse micelle phases in liquid and supercritical ethane

Journal Article · Thu May 19 04:00:00 EDT 1988 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j100321a001· OSTI ID:6625983

Blitz, J P; Fulton, J L; Smith, R D

Dynamic light scattering of sodium bis(2-ethylhexyl) sulfosuccinate (AOT) in liquid and supercritical ethane provides the first direct evidence of reverse micelles in a supercritical fluid (dense gas). Micellar hydrodynamic diameters are only slightly larger in ethane than in liquid isooctane at the same concentrations and temperature, but diffusion coefficients are more than 10 times greater. Measurements of micelle diffusion coefficient and hydrodynamic diameter versus pressure in liquid and supercritical ethane show that density has a strong effect on hydrodynamic size and suggest that micelle clustering may be significant and highly sensitive to pressure. The utility of dynamic light scattering for studying reverse micelle phases in a dense gas is demonstrated.

• Research Organization: Pacific Northwest Lab., Richland, WA (USA)
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 6625983
• Journal Information: J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 92:10; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
400500 -- Photochemistry
ALKANES
DATA
ETHANE
EXPERIMENTAL DATA
FLUIDS
HYDROCARBONS
INFORMATION
LIGHT SCATTERING
LIQUIDS
MICELLAR SYSTEMS
NUMERICAL DATA
ORGANIC COMPOUNDS
SCATTERING
SUPERCRITICAL STATE