Unraveling the mechanism of catalytic reactions through kinetics and thermodynamics

Presentation by:

1. Fred Meunier (Institut de Recherche sur la Catalyse et l’Environnement de Lyon, Villeurbanne, France),

The combination of kinetic and thermodynamic analyses can provide an in-depth knowledge of into crucial steps of the reaction mechanisms taking place over catalysts. A few examples dealing with alkane hydroisomerization, methanol steam reforming, NO oxidation to NO2, and ethanol condensation to butanol show how mechanism(s) can be supported or rejected based on trivial reactant and product concentration analyses.The conclusion is that the comparison of the reaction quotient (Q) or similar ratios to the corresponding thermodynamic equilibrium ratios (e.g. K) can be very useful in supporting or rejecting a reaction mechanism.

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