Preparation of Pt/CeL Reforming Catalyst and Its Naphtha Aromatization Performance

Abstract

In order to overcome the problems of chloride ion loss and corrosion of equipment in conventional alumina reforming catalysts, Ce3+ modified L molecular sieves were prepared by ion exchange method, and Pt/CeL reforming catalysts were prepared by impregnation method; XRD, the carrier and catalyst were characterized by N2 adsorption-desorption, NH3-TPD and Py-FTIR. The industrial refined naphtha with sulfur content of 0.50μg/mL was used as raw material to evaluate on the fixed bed microreactor. The reforming aromatization performance of the Pt/CeL catalyst. The results show that Ce3+ ion exchange can increase the acidity and acid strength of the carrier without destroying the skeleton structure of the L molecular sieve. The reforming aromatization performance of the Ce3+ modified Pt/CeL catalyst is obviously improved, and the activity and selectivity are achieved. The level of the alumina type commercial reforming catalyst indicates that the appropriate acidity has a significant effect on the aromatization reaction of the reforming catalyst.