Mutual diffusivity in n-Heptane + n-Hexane isomers

• Author(s): Lopes, M. L. Matos ; Castro, C. A. Nieto de ; Oliveira, Carla Padrel de
• Date: 1987
• Persistent ID: http://hdl.handle.net/10400.2/2021
• Origin: Repositório Aberto da Universidade Aberta
• Subject(s): n-Heptane; n-Hexane isomers; Mutual diffusivity; Taylor dispersion technique
• Document Type: Article
• Language: English

Description

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%.