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)
Journal or Series Name: The journal of supercritical fluids 
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
Institute: Thermische Verfahrenstechnik V-8 
Type: (wissenschaftlicher) Artikel
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