Kinetics of oxidation of pseudocumene in the vapor phase

The kinetics of pseudocumene oxidation in the vapor phase with tin vanadate as catalyst have been studied over the following ranges of the variables: Oxygen concentration, 0.909 to 2.857 mole/m3; pseudocumene concentration, 0.071 to 0.125 mole/m3; temperature, 260 to 320°C; space time, 22.5 to 90 × 104 g. catalyst/mole sec. Oxidation-reduction models have been found to describe the kinetics adequately. The mechanism is found to remain the same throughout the temperature range covered. On a etudie la cinetique de l'oxydation du pseudo-cumene en phase de vapeur, en utilisant le vanadate d'etain comme catalyseur, sur les echelles suivantes de diverses variables; (a) concentration d'oxygene: 0.909 a 2.857 moles/metre cube; concentration d'oxygene: 0.909 a 2.857 moles/metre cube; concentration du pseudo-cumene: 0.071 a 0.125 mole/metre cube; temperature: 260 a 320°C; espace-temps: 22.5 a 90 × 104 grammes de catalyseur/mole/seconde. On a constate que les modeles d'oxydation et de reduction decrivaient la cinetique d'une maniere adequate et que le mechanisme demeurait le meme sur toute l'echelle des temperatures en jeu.