Collect. Czech. Chem. Commun. 1979, 44, 465-474

A simplified description of multicomponent diffusion in porous media. II. Conditions for negligible forced flow effects

Marta Černá, Jindřich Zahradník and Petr Schneider

Institute of Chemical Process Fundamentals, Czechoslovak Academy of Sciences, 165 02 Prague 6-Suchdol


Conditions are examined permitting the pressure gradient in a porous catalyst sustaining multicomponent diffusion of a gas mixture accompanied by chemical reaction to be neglected. Deviations are computed of the sum of mole fractions from unity for selected typical cases as a measure of error commited by neglecting the forced flow.