Prasad, Ravi Mohan ; Jüttke, Yvonne ; Richter, Hannes ; Voigt, Ingolf ; Riedel, Ralf ; Gurlo, Aleksander (2016)
Mechanism of Gas Separation through Amorphous Silicon Oxycarbide Membranes.
In: Advanced Engineering Materials, 18 (5)
doi: 10.1002/adem.201500380
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Polymer-derived amorphous silicon oxycarbide (SiOC) ceramics are designed for hydrogen separation at high temperatures. To form amorphous SiOC top-coating with the thickness of about 300 nm, tubular porous gamma-Al2O3/a-Al2O3 substrates with gradient porosity are threefold coated by vinyl-functionalized polysiloxane and pyrolyzed at 700 degrees C under argon. N-2-physisorption measurement confirms formation of microporous material with a specific surface area of about 400 m(2) g(-1). Single gas permeance characterization of the SiOC membrane at 300 degrees C reveals H-2/CO2 and H-2/SF6 ideal permselectivities of about 10 and 320, respectively. The experimental gas permeance data are modeled using solid-state diffusion (for He and H-2) and gas translational diffusion (for CO2 and SF6) mechanisms.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2016 |
| Autor(en): | Prasad, Ravi Mohan ; Jüttke, Yvonne ; Richter, Hannes ; Voigt, Ingolf ; Riedel, Ralf ; Gurlo, Aleksander |
| Art des Eintrags: | Bibliographie |
| Titel: | Mechanism of Gas Separation through Amorphous Silicon Oxycarbide Membranes |
| Sprache: | Englisch |
| Publikationsjahr: | Mai 2016 |
| Verlag: | WILEY-V C H VERLAG GMBH, Weinheim |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Advanced Engineering Materials |
| Jahrgang/Volume einer Zeitschrift: | 18 |
| (Heft-)Nummer: | 5 |
| DOI: | 10.1002/adem.201500380 |
| Kurzbeschreibung (Abstract): | Polymer-derived amorphous silicon oxycarbide (SiOC) ceramics are designed for hydrogen separation at high temperatures. To form amorphous SiOC top-coating with the thickness of about 300 nm, tubular porous gamma-Al2O3/a-Al2O3 substrates with gradient porosity are threefold coated by vinyl-functionalized polysiloxane and pyrolyzed at 700 degrees C under argon. N-2-physisorption measurement confirms formation of microporous material with a specific surface area of about 400 m(2) g(-1). Single gas permeance characterization of the SiOC membrane at 300 degrees C reveals H-2/CO2 and H-2/SF6 ideal permselectivities of about 10 and 320, respectively. The experimental gas permeance data are modeled using solid-state diffusion (for He and H-2) and gas translational diffusion (for CO2 and SF6) mechanisms. |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Disperse Feststoffe 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften |
| Hinterlegungsdatum: | 19 Mai 2017 11:10 |
| Letzte Änderung: | 19 Mai 2017 11:10 |
| PPN: | |
| Sponsoren: | DFG - German Research Foundation : Grant Number GU 992/3-2 and VO 1705/1-2 . |
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