| Popis: |
Some continuous reactor models have been analyzed to find out which of them can be used to distinguish the deactivation mechanism (series, parallel, or impurity) of a catalytic system when the results are expressed as relative reaction rate related to the dimensionless concentration at the outlet. The models analyzed were: plug flow (PF), stirred tank (ST), plug flow with axial dispersion (ADR), and a combined model of the last two (ST-ADR). The combined model (ST-ADR) proved to be the only model which could effectively determine the deactivation mechanism using this type of representation. One of the advantages of the ST-ADR over the diffusion reactor is that the kinetic information of the system without deactivation can be obtained at high flowrates. In this way, the experimental results can be processed using the plug-flow model to determine the kinetics of the main reaction. |
