A Summary of Surface Reaction Kinetics

The previous derivations describe what must be expected in the simplest catalytic reactions Orders of reaction and rate coefficients change strongly with conditions. For a unimolecular reaction A — 5 on a surface we expect the rate expression of the form 

for aU reactions that are catalyzed by surfaces we should expect 

Nonintegral orders and even negative orders with respect to a reactant species in catalytic 

Rate expressions obtained in one set of pressures and temperatures might not describe a reactor in another situation because rate expressions of catalytic reactions do not obey the power law  

Traces of impurities should drastically alter catalytic reaction rates even when they do not enter into the reaction. 

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