Quaternary cross-diffusion in water-in-oil microemulsions loaded with a component of the Belousov-Zhabotinsky reaction.

doi:10.1021/jp102753b

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Quaternary cross-diffusion in water-in-oil microemulsions loaded with a component of the Belousov-Zhabotinsky reaction.

Published Jun 24, 2010 · F. Rossi, V. Vanag, E. Tiezzi

The journal of physical chemistry. B

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Abstract

We obtain the diffusion matrix, D, consisting of the main and cross-diffusion coefficients for a loaded AOT microemulsion, a quaternary system containing water (1)/AOT (2)/species (3)/octane (4). Here "species" is a component of the Belousov-Zhabotinsky reaction: NaBr, NaBrO(3), bathoferroin, ferroin, or Br(2). The main and cross-diffusion coefficients of each species depend crucially on its solubility. For water-soluble species (the salts), D(13) and D(23) are large (much larger than the main diffusion coefficients) and positive. For species located mainly in the surfactant shell (bathoferroin or ferroin), D(13) and D(23) are large and negative. For oil-soluble Br(2), D(13) and D(23) are larger and more negative, whereas D(33) >> D(11), D(22). The coefficients D(31) and D(32) are small for all species studied.

Study Snapshot

Key takeawayThe main and cross-diffusion coefficients of Belousov-Zhabotinsky reaction components depend on their solubility, with water-soluble salts showing large positive coefficients and oil-soluble species showing large negative coefficients.

PopulationOlder adults (50-71 years)

Sample size24

MethodsObservational

OutcomesBody Mass Index projections

ResultsSocial networks mitigate obesity in older groups.

Quaternary cross-diffusion in water-in-oil microemulsions loaded with a component of the Belousov-Zhabotinsky reaction.

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