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| Titel: |
MUTUAL CONCENTRATION RELATIONS DURING REACTION IN POROUS CATALYSTS IN THE TRANSITION REGION OF DIFFUSION |
| Auteur: |
Schneider, P. |
| Verschenen in: |
Chemical engineering communications |
| Paginering: | Jaargang 1 (1974) nr. 5 pagina's 239-247 |
| Jaar: |
1974 |
| Inhoud: |
The applicability of modified Stefan-Maxwell equations (1) to multicomponent diffusion in the transition diffusion region has been investigated. It appears that ratios of diffusion fluxes imposed by the reaction stoichiometry and the necessity of a momentum balance of molecules cause a total pressure gradient to be formed. Assuming a negligible effect of these gradients, Eqs. (1) were numerically integrated for cyclopropane hydrogenolysis: the resulting mutual concentration dependences were virtually linear. Using this linearity, conditions for determining the key component and composition of the diffusion stoichiometric mixture were developed. A simplified diffusion equation (18), together with the definition of the appropriate diffusion coefficient DI was suggested for the description of multi-component diffusion with a catalytic reaction in the transition diffusion region. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
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