Reaction Efficiency on the Surface of a Porous Catalyst
✍ Scribed by Garza-López, Roberto A.; Kozak, John J.
- Book ID
- 121447898
- Publisher
- American Chemical Society
- Year
- 1999
- Tongue
- English
- Weight
- 516 KB
- Volume
- 103
- Category
- Article
- ISSN
- 0022-3654
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📜 SIMILAR VOLUMES
## Ah&act-The inlluence of intraparticle mass diffusion on the overall and relative rates of the parallel reactions A + B and A + C is examined for the case of an isothermal catalyst particle with no external concentration or temperature gradients. Calculations for three pairs of reaction orders:
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
The selectivity of two first-order, parallel reactions, one reversible and one irreversible, can be altered substantially by the presence of an intraparticle diffusion resistance. At very large resistances, the relative selectivity approaches an asymptotic limit which depends on the kinetic, transpo