Abstract:
Aromatization is one of the most important petrochemical processes for aromatic production. Pt/KL catalyst prepard by Vapor Phase Impregnation method is known to be an effective catalyst for n-octane aromatization. However, during the reaction, catalysts deactivate due to coke formation. Consequently, it is common practice to regenerate the catalysts to recover their activity. Hence, the attempt of this work is to investigate the influences of air flow rate, temperature and time of regeneration by coke oxidation in air to determine the optimal regeneration conditions of such catalysts. In addition, oxychlorination treatment was also studied to redisperse Pt particles after regeneration in air. It was found that the optimal regeneration temperature, time and air flow rate was 250C, 0.5 h and 100 ml/min/g. of catalysts, respectively. Moreover, it was clearly seen that regeneration with oxychlorination treatment can restore Pt redispersion as close as that of the fresh catalysts.
