CATALYTIC ACTIVITY AND SELECTIVITY OF Re2O7–Al2O3FOR THE METATHESIS OF CYCLOOCTADIENE

Abstract The metathesis of cyclooctadiene was studied over fourteen kinds of oxides or binary oxides at 40°C in a liquid phase. Only Re2O7–Al2O3 was found to be active. The conversion was 100 % when the concentration of cyclooctadiene was low and the selectivity for the formation of C12, C16, and C20 cyclopolyenes was 64 %. The distribution of C12–C32 cyclopolyenes was entirely different from that in homogeneous catalyst system.