Kinetics of isopropylation of benzene over HBeta catalyst

The kinetics of benzene alkylation with isopropyl alcohol has been studied in the vapor phase over the H form of Beta zeolite as the catalyst. On the basis of the product distribution pattern obtained over this large-pore zeo lite, a reaction mechanism has been proposed. From this reaction network, a simple stoichiometric model has been derived and fitted to the kinetic dat a. The deactivation kinetics has also been investigated in a selected low-t emperature range. The activation energies of all reactions in the network h ave been determined. The activation energy for the deactivation reaction in the chosen temperature range is found to be lower than that for the main r eaction.