Characterizing kinetics near a first-order catalytic poisoning transition

We conside the kinetics near a first-order poisoning transition for simple surface reaction models which exlude nonreactive desorption. Elucidation of the development and growth of the reactive steady state from a near-poisoned state is achieved via an oxidation epidemic'' analysis of the...

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Bibliographic Details
Published in:Physical review letters 1991-02, Vol.66 (6), p.833-836
Main Authors: EVANS, J. W, MIESCH, M. S
Format: Article
Language:English
Subjects:
360604 - Materials- Corrosion, Erosion, & Degradation
400102 - Chemical & Spectral Procedures
ADSORPTION
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CATALYSIS
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
Chemistry
DATA
DIMERS
Exact sciences and technology
General and physical chemistry
INFORMATION
INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY
IRREVERSIBLE PROCESSES
KINETICS
MATERIALS SCIENCE
MONOMERS
NUMERICAL DATA
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PROBABILITY
RANDOMNESS
REACTION KINETICS
SORPTION
STEADY-STATE CONDITIONS
SURFACES
THEORETICAL DATA
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
TIME DEPENDENCE
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Summary:We conside the kinetics near a first-order poisoning transition for simple surface reaction models which exlude nonreactive desorption. Elucidation of the development and growth of the reactive steady state from a near-poisoned state is achieved via an oxidation epidemic'' analysis of the evolution of an empy patch embedded in the poisoned phase. Associated critical exponents vary strongly with reaction rate, and reflect slow kinetics. The increase in epidemic survival probability with initial patch size is smooth, and described by additional exponents, rather than indicating a critical size for survival.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.66.833