Abstract
Effective diffusion coefficients in two porous ceramic materials for a number of binary gas mixtures are determined by using the well-known Wicke-Kallenbach diffusion cell technique. For the calculation of the effective diffusivities from the experimental data, an alternative method is introduced. Parameters of the experimental design rarely considered in such measurements are also examined in order to ensure that for the chosen experimental conditions the assumptions and approximations made are appropriate and valid for the current method. The analysis confirms the validity of the theoretical treatment with which the diffusion data are interpreted. The obtained diffusion results are discussed in the context of the solid oxide fuel cells since the gas pairs used are those relevant to solid oxide fuel cell anode operation.
Original language | English |
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Title of host publication | Proceeedings of 16th International Congress of Chemical and Process Engineering. CHISA 2004 |
Publication status | Published - 2004 |
Event | 16th International Congress of Chemical and Process Engineering - Czech Republic, Prague , Czech Republic Duration: 22 Aug 2004 → 26 Aug 2004 Conference number: 16TH |
Conference
Conference | 16th International Congress of Chemical and Process Engineering |
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Abbreviated title | CHISA 2004 |
Country/Territory | Czech Republic |
City | Prague |
Period | 22/08/04 → 26/08/04 |