共 50 条
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
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
收藏
页码:1954 / 1962
页数:9
相关论文