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Process-Based Model of Mixed-Matrix Membrane
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SYSNO ASEP 0381762 Document Type C - Proceedings Paper (int. conf.) R&D Document Type The record was not marked in the RIV Title Process-Based Model of Mixed-Matrix Membrane Author(s) Čapek, P. (CZ)
Hejtmánek, Vladimír (UCHP-M) RID, SAI
Veselý, M. (CZ)
Sysel, P. (CZ)
Kočiřík, Milan (UFCH-W) RID, ORCID
Brabec, Libor (UFCH-W) RID, ORCID
Zikánová, Arlette (UFCH-W) RID
Bernauer, B. (CZ)
Fíla, V. (CZ)Source Title Final Program. - Praha : Orgit, 2012 - ISBN 978-80-905035-1-9 Pages c7.2 Number of pages 1 s. Publication form CD-ROM - CD-ROM Action International Congress of Chemical and Process Engineering CHISA 2012 and 15th Conference PRES 2012 /20./ Event date 25.08.2012-29.08.2012 VEvent location Prague Country CZ - Czech Republic Event type WRD Language eng - English Country CZ - Czech Republic Keywords mixed-matrix membrane ; composite material ; gas separation processes Subject RIV CI - Industrial Chemistry, Chemical Engineering Institutional support UCHP-M - RVO:67985858 ; UFCH-W - RVO:61388955 Annotation The focus of this contribution was on the formulation and verification of a process-based model of the mixed-matrix membrane that consisted of the polyimide matrix synthesized from the monomers 4,4’-(hexafluoroisopropylidene)diphtalic anhydride and 4,4’-oxydianiline, and silicalite-1. When a solution of a polyimide precursor in N,N-dimethylformamide was ready, silicalite-1 particles were dispersed in the solution and the dispersion was subsequently cast on a Teflon support plate. An initial mass ratio of silicalite-1 and polyimide was about 1:1. After solvent removal, the films were heated in subsequent steps up to 230°C for two hour. From a process-based model point of view, a key operation of the entire synthesis was slow sedimentation of silicalite particles in the viscous solution. Preliminary observation of 2D cuts through the solid membrane in a scanning electron microscope revealed that there were a lot of contacts among the silicalite particles. Therefore, a sequential (ballistic) deposition algorithm, well representing sedimentation in a low-energy environment, was used to create an off-lattice model of spatial distribution of the silicalite particles in the polyimide matrix. Workplace Institute of Chemical Process Fundamentals Contact Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Year of Publishing 2013
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