Premium
The kinetic effects of decreasing catalytic activity on a simple rate expression
Author(s) -
Read J. F.,
Bewick S. A.,
Dunfield L. G.,
Wetmore S. D.
Publication year - 2000
Publication title -
international journal of chemical kinetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.341
H-Index - 68
eISSN - 1097-4601
pISSN - 0538-8066
DOI - 10.1002/(sici)1097-4601(2000)32:1<7::aid-jck2>3.0.co;2-s
Subject(s) - chemistry , kinetics , kinetic energy , reaction rate constant , catalysis , thermodynamics , simple (philosophy) , expression (computer science) , reaction rate , first order , order of reaction , rate equation , computational chemistry , organic chemistry , mathematics , classical mechanics , philosophy , physics , epistemology , computer science , programming language
When kinetics are studied for a catalyzed reaction, the active catalyst surface available affects the results. This article illustrates the effect of a progressively decreasing available surface on the heterogeneous kinetics of a gas‐phase reaction in a closed system. The present contribution focuses on the effect of simple m th order surface deactivation on a simple n th order kinetic expression. The basic analysis and general results are unchanged if more complex equations are used. It is shown that there are certain common anomalous characteristics of kinetic expressions involving deactivation. In particular, the apparent rate constant and the apparent order are usually dependent on both the actual and initial pressures of the reactant, and the reaction may not go to completion. © 2000 John Wiley & Sons, Inc. Int J Chem Kinet 32: 7–16, 2000