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On the selectivity of heterogeneous catalysts—a boundary value problem associated with zero order reaction

✍ Scribed by K. Blackmore; P. Luckett; W.J. Thomas

Publisher
Elsevier Science
Year
1975
Tongue
English
Weight
528 KB
Volume
30
Category
Article
ISSN
0009-2509

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✦ Synopsis

Wheeler's extension of Thiele's classical work on the effect of diffusion on chemical reaction in porous catalysts includes a discussion of competing reactions and catalyst selectivity.

Close examination of mathematical models in which one of the competing reactions is zero order revelas that, unless the boundary conditions are carefully defined, inadequacies would exist which may permit a physically unrealistic description of the selectivity. Appropriate extension of the usual boundary conditions, however, provides for a better physical model for reaction schemes of type II and III (Wheeler's classification) involving zero order kinetics.

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