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Comparisons of the Adsorption Equilibrium of Benzene Derivatives in Reversed-Phase Liquid Chromatography
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The isotherm behaviour of three benzene derivatives, Valerophenone (VPhn), Butyl
Benzoate (BBzt) and tert-butylbenzene (tBBz), as well as two binary mixtures VPhn+tBBz
and BBzt+tBBz were studied. To try to describe to explain the isotherm data, the multilayer
multi-component model was used, a model recently developed by a research group
led by Prof. Andreas Seidel-Morgenstern in the Max Planck Institut for Dynamics of
Complex Technical Systems (MPI). The main goal of this work is to obtain experimental
validation to this model, which until now only existed in paper. The results showed
that this model can describe well the isotherm data for both single and multi component
systems. Since multi component experiments consume lots of time and resources, crosschecks
between the fitted parameters of single and multi components were performed to
see if single parameters could describe well the multi component isotherms. The results
show that the cross check is not bad, although it’s always needed some mixture data.
Some further work can be done to determine the minimum amount of multi-component
data that gives a good description of the mixtures’ isotherm behaviours.