feed composition cycling
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1990 ◽  
Vol 55 (8) ◽  
pp. 1968-1983
Author(s):  
Karel Klusáček ◽  
Peter Lewis Silveston ◽  
Robert Ross Hudgins

A numerical study of feed composition cycling (periodic operation) of stoichiometrically simple reactions described by Langmuir-Hinshelwood or Eley-Rideal kinetics reveal that although time-average production rates may be higher than the corresponding steady-state ones at the same time-average feed composition, they do not exceed the maximum steady-state rates at a given space velocity. This behaviour is explained by the dynamics of surface concentrations of adsorbed species during a cycle. Although these findings support other numerical studies, they are at variance with experimental observations. Thus, there is a need to develop more sophisticated kinetic models for the prediction of dynamic behaviour of heterogeneous catalytic systems.


1989 ◽  
Vol 50 (1) ◽  
pp. 303-306 ◽  
Author(s):  
R.R. Hudgins ◽  
P.L. Silveston ◽  
Rolf Edvinsson

1985 ◽  
Vol 63 (6) ◽  
pp. 963-970 ◽  
Author(s):  
A. Nappi ◽  
L. Fabbricino ◽  
R. R. Hudgins ◽  
P. L. Silveston

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