Publisher DOI: | 10.1016/j.supflu.2017.07.014 | Title: | Modeling adsorption on energetically heterogeneous surfaces with an extended SAFT-VR approach | Language: | English | Authors: | Kern, Johannes Johannsen, Monika ![]() |
Keywords: | Adsorption; Carbon dioxide; Equation of state; Heterogeneous surface; SAFT-VR | Issue Date: | 2018 | Source: | Journal of Supercritical Fluids (133): 70-76 (2018) | Abstract (english): | 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%. |
URI: | http://hdl.handle.net/11420/3909 | ISSN: | 0896-8446 | Journal: | The journal of supercritical fluids | Institute: | Thermische Verfahrenstechnik V-8 Bioprozess- und Biosystemtechnik V-1 |
Document Type: | Article |
Appears in Collections: | Publications without fulltext |
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