BIBLIOS

Document type
Journal articles

Document subtype
Full paper

Title
Mutual diffusivity in n-heptane + n-hexane isomers

Participants in the publication
M.L. Matos Lopes (Author)
Dep. Química e Bioquímica
CQE
C.A. Nieto de Castro (Author)
Dep. Química e Bioquímica
CQE
C.M. Padrel de Oliveira (Author)
UNIVERSIDADE ABERTA

Summary
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%.


Institution
FACULDADE DE CIÊNCIAS DA UNIVERSIDADE DE LISBOA

Where published
Fluid Phase Equilibria

Publication Identifiers

Publisher
Elsevier BV



Document Identifiers
DOI - https://doi.org/10.1016/0378-3812(87)85023-9
URL - http://dx.doi.org/10.1016/0378-3812(87)85023-9

Keywords
Diffusivity n-heptane n-hexane isomers Taylor Dispersion Technique Rough-Hard-Sphere Model