Ludovic Jullien, Anna Proust, Jean Christophe Le Menn
The kinetic and thermodynamic behavior of a chemical system undergoing coupled competitive reactions is analyzed. It is illustrated by considering the hydrogenation reaction of a Vaska type complex. In a first part, the meaning of kinetic/thermodynamic controls and of kinetic stability is thoroughly revisited. The different regimes are defined by reference to the characteristic times emerging from equations describing the evolution. In a second part, it is shown how the Gibbs free energy of the reacting system varies when successively submitted to kinetic and thermodynamic controls.
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