Istituto di Scienza e Tecnologie dell'Informazione     
Tartarelli R., Morelli F., Capovani M. Diffusional phenomena and apparent kinetics for nth-order gas-solid non-catalytic reactions. In: Canadian Journal of Chemical Engineering, vol. 47 pp. 201 - 203. Canadian Soc. for Chemical Engineering, 1969.
The influence of the diffusional phenomena on the apparent kinetics for nth-order gas-solid non-catalytic reactions: Ggas + a Asolid = b Bsolid + gas is studied assuming the unreacted-core model. Flat-plate, cylindrical and spherical particles are considered, the size of which may vary with extent of reaction. Specific methods of contacting of fluid with solid are taken into account, but their influence on the results are not remarkable. At high conversions of cylindrical and spherical particles, the process is always chemical reaction controlled.
On a étudié l'influence des phénomènes diffusionnels sur la cinétique apparent pour des réactions non cathalytiques gas-solide d'ordre n: Ggas + a Asolide = b Bsolide + gas en assumant le modèle à nucleus non-reagi. Nous avons consideré des particules laminaires, cylindriques et sphériques, la dimension desquelles peut varier pendant la réaction. On a consideré des méthodes spécifiques de contact gas-solide, mais leur influence sur les résultats n'est pas remarquable. Le régime pour les particles cylindriques et sphériques à haute conversion est toujours contròlé par la réaction chimique.
Subject Diffusional phenomena

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