Publications
| [156137] |
| Title: Modeling adsorption on energetically heterogeneous surfaces with an extended SAFT-VR approach. |
| Written by: Kern, J., Johannsen, M. |
| in: <em>The Journal of Supercritical Fluids</em>. (2018). |
| Volume: <strong>133</strong>. Number: |
| on pages: 70-76 |
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| Publisher: Elsevier B.V.: |
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| Institution: Hamburg University of Technology, Eissendorfer Strasse 38, D-21073 Hamburg, Germany |
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| DOI: 10.1016/j.supflu.2017.07.014 |
| URL: http://hdl.handle.net/11420/3909 |
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Note:
Abstract: Adsorption equilibria of methanol/carbon dioxide mixtures on plain silica particles at 308 K and pressures of 10.1 MPa, 12.7 MPa, 15.1 MPa and 20.1 MPa were measured with the frontal analysis by characteristic points (FACP) method using supercritical fluid chromatography. The data show a bimodal adsorption energy distribution and cannot be sufficiently modeled with a two-dimensional SAFT-VR approach. Therefore, an extension of SAFT-VR is proposed to model adsorption on heterogeneous surfaces and applied to the presented data. It can be described by the extended model with very low ARDs between 1.0% and 2.4%.
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