Influence of catalyst binder on the acidity and activity/selectivity of Ga/H-ZSM-5 in propane aromatization

Abstract

The acidity and initial and time-on-stream activity in propane aromatization (at 550° C, space velocity of 3100 cm³g^-1 (zeolite)h^-1) of Ga-impregnated H-ZSM-5 zeolite without or with binders (50 wt%), such as silica, alumina and kaolin, have been investigated. Both the acidity and catalytic activity of the zeolite are influenced by the presence of binder in the catalyst, depending upon the binder. The influence is found to be lowest for alumina and highest for kaolin. Among the binders, alumina is the most preferred binder for the zeolite catalyst.