H 2O 2 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 synthesized hydrothermally, were found to be active in cyclohexane oxyfunctionalization, cyclohexanol and 2-hexanol oxidation, and octene-1 and cyclohexene 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 reaction solution. This activity and H 2O 2 selectivity were in the order TAPO-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.