Mutual diffusivity in n-Heptane + n-Hexane isomers

Lopes, M. L. Matos; Castro, C. A. Nieto de; Oliveira, Carla Padrel de

http://hdl.handle.net/10400.2/2021

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Authors

Lopes, M. L. Matos

Castro, C. A. Nieto de

Oliveira, Carla Padrel de

Abstract(s)

A preliminary study of the effect of branching in the binary diffusion of hexane isomer + n-heptane systems is presented. Measurements have been performed with an instrument modeled for the Taylor dispersion technique, at several compositions, at 297 K, for the n-hexane + n-heptane and 2,2-dimethylbutane + n-heptane binary mixtures. The accuracy is estimated to be 1%. The influence of branching is discussed. It was found that the rough hard sphere model for binary diffusion can reproduce the experimental data within 6%. This model was used to predict the binary diffusion coefficients in the 2-methylpentane + n-heptane and 3-methylpentane + n-heptane mixtures, with an estimated accuracy of 5%.

Keywords

n-heptane n-hexane isomers Mutual diffusivity Taylor dispersion technique

URI

http://hdl.handle.net/10400.2/2021

Citation

Lopes, M. L. Matos; Castro, C. A. Nieto de; Oliveira, Carla Padrel de - Mutual diffusity in n-heptane + n-hexane isomers. "Fluid Phase Equilibria" [Em linha]. ISSN 0378-3812. Vol. 36 (Out. 1987), p. 195-205