Transient diffusion, adsorption and reaction in porous catalysts: The reaction controlled, quasi-steady catalytic surface
β Scribed by Stephen Whitaker
- Publisher
- Elsevier Science
- Year
- 1986
- Tongue
- English
- Weight
- 780 KB
- Volume
- 41
- Category
- Article
- ISSN
- 0009-2509
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β¦ Synopsis
The process of transient diffusion, adsorption and heterogeneous reaction in porous catalysts is analysed using the method of volume averaging. The analysis illustrates under what circumstances the effective diffusivity tensor is independent of the adsorption and reaction process, and thus indicates when effective diffusivities determined in passiue systems can be used in the analysis of nctiue systems. Normal mode analysis is used to determine under what conditions the process can be described in terms of a reaction controlled, quasi-steady catalytic surface.
π SIMILAR VOLUMES
Exact solutions are obtained to the system of a single non-porous catalytic sphere immersed in a reactant field having strong concentration and temperature gradients when the particle reacts chemically with its surroundings. When these solutions are compared with the exact solutions to the correspon