Effective diffusivity measurements of binary gaseous mixtures with relevance to solid oxide fuel cell anode operation: a new method for the interpretation of diffusion data

Christos Kalyvas, Nigel Brandon

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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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 languageEnglish
Title of host publicationProceeedings of 16th International Congress of Chemical and Process Engineering. CHISA 2004
Publication statusPublished - 2004
Event16th International Congress of Chemical and Process Engineering - Czech Republic, Prague , Czech Republic
Duration: 22 Aug 200426 Aug 2004
Conference number: 16TH

Conference

Conference16th International Congress of Chemical and Process Engineering
Abbreviated titleCHISA 2004
Country/TerritoryCzech Republic
CityPrague
Period22/08/0426/08/04

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