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Nonlinear Frequency Response Analysis as a Tool for Identification of Adsorption Kinetics: Case Study-Pore-Surface Diffusion Control
dc.creator | Brzić, Danica | |
dc.creator | Petkovska, Menka | |
dc.date.accessioned | 2021-03-10T14:04:20Z | |
dc.date.available | 2021-03-10T14:04:20Z | |
dc.date.issued | 2019 | |
dc.identifier.issn | 1024-123X | |
dc.identifier.uri | http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4211 | |
dc.description.abstract | In the present paper, the Nonlinear Frequency Response (NFR) analysis is applied for theoretical study of kinetics of adsorption governed by pore-surface diffusion. The concept of higher-order frequency response functions (FRFs) is used. Based on a nonlinear mathematical model for adsorption of pure gas and spherical adsorbent particles, the theoretical first-and second-order FRFs, which relate the adsorbate concentration in the particle to the surrounding pressure (F-1 (omega) and F-2 (omega,omega)), have been derived. The obtained FRFs have been simulated for different steady-state pressures and different ratios (between zero and one) of surface to pore diffusion coefficients. The results show that, unlike F-1 (omega), F-2 (omega,omega) exhibits features which unambiguously distinguish the pore-surface diffusion model from pure pore diffusion and micropore diffusion. Based on the characteristic features of F-1 (omega) and F-2 (omega,omega), a new methodology for direct estimation of the separate values of the pore and surface diffusion coefficients has been established. | en |
dc.publisher | Hindawi Ltd, London | |
dc.relation | info:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/172022/RS// | |
dc.rights | openAccess | |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | |
dc.source | Mathematical Problems in Engineering | |
dc.title | Nonlinear Frequency Response Analysis as a Tool for Identification of Adsorption Kinetics: Case Study-Pore-Surface Diffusion Control | en |
dc.type | article | |
dc.rights.license | BY | |
dc.citation.other | 2019: - | |
dc.citation.rank | M23 | |
dc.citation.volume | 2019 | |
dc.identifier.doi | 10.1155/2019/7932967 | |
dc.identifier.fulltext | http://TechnoRep.tmf.bg.ac.rs/bitstream/id/10011/7932967.pdf | |
dc.identifier.scopus | 2-s2.0-85067060721 | |
dc.identifier.wos | 000471771200001 | |
dc.type.version | publishedVersion |