Catalytic behavior of platinum catalysts supported on Cs beta zeolite/gamma-alumina, for n-heptane reforming reactions, was studied. Cs concentration in the beta zeolite varied from 0 to 0.84 wt.%, in order to neutralize Bronsted acid sites. Increase in Cs content leads to decrease cracking products, but without increase in the toluene selectivity. In the same study Cs beta zeolite catalysts were compared with pure gamma-alumina supported platinum catalyst, showing high toluene selectivity. Selectivity towards isomerization products is favored with catalysts containing Cs beta zeolite, suggesting a bifunctional behavior of such catalyst in spite of Cs content.