Investigation of Pt/Zr-(MoOx or WOx)@HMS catalysts in n-heptane isomerization reaction

Pt/ZrO2-HMS catalysts with Si/Zr molar ratio=5, promoted by MoOx and WOx, were studied and compared with their undoped equivalents for n-heptane isomerization reaction at 200–350 oC. Catalysts characterization shows that the addition of Zr/(Mo or W) has a remarkable influence on the surface and textual properties depending on the modification method. Reaction results demonstrate that the modification with MoOx exhibits a significant advantage over ZrO2 and WOx that the higher conversion of n-heptane and selectivity to isoheptane are obtained. The results show that the addition of MoOx improves the selectivity to isoheptane.

Keywords:

Pt/ZrO2-HMS , Isomerization , MoOx , WOx , Isoheptane