Revealing the high activity of WO3–SBA-15 with isolated tungsten oxide species in cis-cyclooctene epoxidation

The superior performance of WO 3 –SBA-15 for epoxidation was attributed that the abundant isolated WO 4 benefited the coordination and activation of H 2 O 2 , and strong electron-withdrawing by the support facilitated weakening the bond strength of the O–O bond in W–OOH.