Gas Phase Transport, Adsorption and Surface Diffusion in Porous Glass Membrane

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F05%3A00028711" target="_blank" >RIV/67985858:_____/05:00028711 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Gas Phase Transport, Adsorption and Surface Diffusion in Porous Glass Membrane

Original language description

Due to their improved performance and excellent chemical resistance there is a growing interest in applying inorganic membrane not only for gas separation but also in combination with heterogeneous catalysts in membrane reactors. The objective of this work is to study the mass transfer through a Vycor glass membrane which might be applied successfully in membrane reactors. Transient diffusion experiments were carried out in which two different gases were exchanged via the membrane. If adsorbable gases are involved there is a strong asymmetry between corresponding exchange experiments. In order to analyze the transient diffusion experiments a transport model was applied which is based on the Dusty Gas Model for the quantification of gas phase transportand on the generalized Stefan-Maxwell theory for the description of the transport of adsorbed species. The model describes relatively well exchange experiments performed with H2 and N2 or He and CO2.

Czech name

Transport plynů, adsorpce a povrchová difúze v porézní skleněné membráně

Czech description

Důvodem studie transportu látek ve Vycorové membráně je možnost jejího úspěšného použití jako materiálu pro membránový reaktor. Difúzní experimenty za neustálených podmínek byly prováděny ve Wicke-Kallenbachově cele, kde dva plyny byly zaměňovány přes membránu. Pokud byly použity adsorbovatelné plyny objevila se silná asymetrie mezi odpovídajícími si výměnnými experimenty. Pro vyhodnocení experimentů byl použit Dusty Gas model pro transport plynu a obecná Stefan-Maxwellova teorie pro popis transportu adsorbovaných složek. Model popsal velmi dobře transport H2, N2, He a CO2.

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

CF - Physical chemistry and theoretical chemistry

OECD FORD branch

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Project

<a href="/en/project/IAA4072402" target="_blank" >IAA4072402: Study of transport phenomena in polymeric membrane during pervaporation</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2005

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Catalysis Today

ISSN

0920-5861

e-ISSN

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Volume of the periodical

104

Issue of the periodical within the volume

2-4

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

8

Pages from-to

344-351

UT code for WoS article

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EID of the result in the Scopus database

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