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Diffusional influences on deactivation rates
Author(s) -
Krishnaswamy S.,
Kittrell J. R.
Publication year - 1981
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690270117
Subject(s) - diffusion , analogy , chemistry , simple (philosophy) , thermodynamics , mechanics , process engineering , biological system , biochemical engineering , engineering , physics , biology , linguistics , philosophy , epistemology
The interrelation between internal diffusion and concentration‐independent deactivation is examined using a simple mathematical model. Analytical procedures are developed for evaluating the performance of single catalyst particles in the presence of diffusion and deactivation. By incorporating time‐dependent effectiveness factors in design equations, reactor performance under the combined influence of diffusion and deactivation is predicted. By analogy to the effectiveness factor for non‐deactivating systems, the concept of a deactivation effectiveness factor is introduced.