Diffusion coefficients of 2-fluoroanisole, 2-bromoanisole, allylbenzene and 1,3-divinylbenzene at infinite dilution in supercritical carbon dioxide
The Taylor-Aris chromatographic technique was employed for the determination of diffusion coefficients of 2-fluoroanisole, 2-bromoanisole, allylbenzene and 1,3-divinylbenzene at infinite dilution in supercritical carbon dioxide from 313.16 to 333.16 K and pressures between 15 and 35 MPa. As expected...
| Autores: | , , , |
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| Formato: | artículo |
| Fecha de publicación: | 2007 |
| País: | España |
| Recursos: | Universidad de Oviedo (UNIOVI) |
| Repositorio: | RUO. Repositorio Institucional de la Universidad de Oviedo |
| Idioma: | inglés |
| OAI Identifier: | oai:digibuo.uniovi.es:10651/69062 |
| Acesso em linha: | https://hdl.handle.net/10651/69062 https://dx.doi.org/10.1016/j.fluid.2007.07.039 |
| Access Level: | acceso abierto |
| Palavra-chave: | Carbon dioxide Chromatography Supercritical fluid |
| Resumo: | The Taylor-Aris chromatographic technique was employed for the determination of diffusion coefficients of 2-fluoroanisole, 2-bromoanisole, allylbenzene and 1,3-divinylbenzene at infinite dilution in supercritical carbon dioxide from 313.16 to 333.16 K and pressures between 15 and 35 MPa. As expected, the diffusivities rise when temperature increases and pressure decreases. Numerous predictive equations are compared with experimental data: Lai-Tan, Liu-Ruckenstein cluster formula, Woerlee, Hippler-Schubert-Troe, Catchpole-King, Eaton-Akgerman, He, He-Yu, Liu-Silva-Macedo, Funazukuri and coworkers, Dariva-Coelho-Oliveira, Zhu-Lu-Zhou-Wang-Shi and the Liu-Ruckenstein RHS formula. The equations of He, He-Yu and Catchpole-King are the best of all, but cannot be used in the whole range of temperatures and solvent densities |
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