H2O2 OXIDATION AND EPOXIDATION OF HYDROCARBONS AND ALCOHOLS OVER TITANIUM ALUMINOPHOSPHATES TAPO-5, TAPO-11, AND TAPO-36

Titanium ALPOs, TAPO-5, TAPO-11, and TAPO-36, which have been synthesi zed hydrothermally, were found to be active in cyclohexane oxyfunction alization, cyclohexanol and 2-hexanol oxidation, and octene-1 and cycl ohexene epoxidation in the presence of dilute hydrogen peroxide. TAPO catalytic oxidation activity was shown to be associated with framework -incorporated Ti atoms and not with any hypothetical Ti species in rea ction solution. This activity and H2O2 selectivity were in the order T APO-5 > TAPO-11 > TAPO-36, with TAPO-5 being only slightly less active and selective than a titanium silicalite (TS-1) sample of similar Ti content and higher BET surface area. (C) 1998 Academic Press.