ARTICLE:

• PREDICTION OF MUTUAL DIFFUSION COEFFICIENTS OF AROMATICS- BY GROUP CONTRIBUTION METHOD  download article

Xiu-Mei Guo
Department of Chemical Engineering, Tsinghua University, Beijing 100084, P.R.C.

Wei-Yang Fei
Department of Chemical Engineering, Tsinghua University, Beijing 100084, P.R.C.

Jia-Ding Wang
Department of Chemical Engineering, Tsinghua University, Beijing 100084, P.R.C.

ABSTRACT

The mutual diffusion coefficients of DMSO-aromatics (toluene, cumene, p-xylene, naphthalene, alpha-methyl naphthalene, phenanthrene, pyrene) at 25 °C have been measured using the metallic diaphragm cell technique. The group contribution method for the prediction of diffusion coefficients in liquid has been used successfully after defining new functional groups and evaluating the group parameters for these complex systems. A discussion at the effects and interactions of solution concentration and molecular structure on diffusion coefficients is also presented.

 download article

« Previous article         Next article »