Isomerization of alkanes over bifunctional Pt(Pd)/WO3-ZrO2 catalysts

The effect of the Pd and Pt addition into WO3-ZrO2 catalyst on the isomerization reaction of C6-C7 alkanes mixture in the range of LHSV=0.5-4 h−1 is studied. The best reaction performance is achieved on Pd/WO3-ZrO2 catalyst at a temperature of 170°C and LHSV=1 h−1: the yield of heptane isomers is 67.2 wt.% (including DTMS – 26.5 wt.%) at heptane conversion of 86.4%; the yield of hexane isomers is 53.7 wt.% (including DMB – 8.9 wt.%) at hexane conversion of 57.3%. In this case, the RON of the obtained isomerate is 55 points and the yield of stable catalyzate C5+ is 89.8 wt.%.