Dynamic Gas Transport in Porous Bidispersed Alumina

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Title:Dynamic Gas Transport in Porous Bidispersed Alumina
Creators:
Hejtmánek, Vladimír
Čapek, Pavel
Šolcová, Olga
Schneider, Petr
Journal or Publication Title:
Collection of Czechoslovak Chemical Communications, 63, 11, pp. 1954-1962
Uncontrolled Keywords:Porous structure model, Diffusion, Porous materials, Gas permeation, Alumina

Abstract

A spontaneous temporary rise in the pressure gradient through countercurrent binary transport of inert gases in porous bidispersed alumina was observed in diffusion cell of the Wicke-Kallenbach type. Experimental pressure responses to gas step changes were detected and fitted to a set of partial differential equations. These were based on the transport models Mean Transport Pore Model (MTPM) and Dusty Gas Model (DGM). The dynamic set transport parameters 〈<i>r</i>〉, 〈<i>r</i><sup>2</sup>〉 and ψ for both models were obtained using an optimization algorithm and discussed. It was found that the values of the transport radius 〈<i>r</i>〉 are in a good agreement with the mean radius obtained from the measurement of alumina texture. <p>

Title:Dynamic Gas Transport in Porous Bidispersed Alumina
Creators:
Hejtmánek, Vladimír
Čapek, Pavel
Šolcová, Olga
Schneider, Petr
Uncontrolled Keywords:Porous structure model, Diffusion, Porous materials, Gas permeation, Alumina
Divisions:Life and Chemical Sciences > Institute of Organic Chemistry and Biochemistry > Collection of Czechoslovak Chemical Communications
Journal or Publication Title:Collection of Czechoslovak Chemical Communications
Volume:63
Number:11
Page Range:pp. 1954-1962
ISSN:0010-0765
E-ISSN:1212-6950
Publisher:Institute of Organic Chemistry and Biochemistry
Related URLs:
URLURL Type
http://dx.doi.org/10.1135/cccc19981954UNSPECIFIED
ID Code:1434
Item Type:Article
Deposited On:06 Feb 2009 17:09
Last Modified:06 Feb 2009 16:09

Citation

Hejtmánek, Vladimír; Čapek, Pavel; Šolcová, Olga; Schneider, Petr (1998) Dynamic Gas Transport in Porous Bidispersed Alumina. Collection of Czechoslovak Chemical Communications, 63 (11). pp. 1954-1962. ISSN 0010-0765

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