Dynamic gas transport in porous bidispersed alumina

被引：0

作者：

Hejtmanek, V ^{[1
]}

Capek, P ^{[1
]}

Solcova, O ^{[1
]}

Schneider, P ^{[1
]}

机构：

[1] Acad Sci Czech Republ, Inst Chem Proc Fundamentals, CR-16502 Prague 6, Czech Republic

来源：

COLLECTION OF CZECHOSLOVAK CHEMICAL COMMUNICATIONS | 1998年 / 63卷 / 11期

关键词：

diffusion; gas permeation; porous structure model; alumina; porous materials;

D O I：

10.1135/cccc19981954

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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 [r], [r(2)] and psi for both models were obtained using an optimization algorithm and discussed. It was found that the values of the transport radius [r] are in a good agreement with the mean radius obtained from the measurement of alumina texture.

引用

页码：1954 / 1962

页数：9

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