Photocatalytic dehydrogenation of liquid propan-2-ol by TiO2. Part 2.—Mechanism
Abstract
The photodehydrogenation of propan-2-ol mediated by TiO2 has been studied. Using basic additives it has been established that the sites responsible for the bulk of the reaction are acidic in nature. A fibre-optic monitoring system has been used to study changes in absorption of radiation by the TiO2 in the presence of N2, O2 and H2O2. It is concluded that the active sites are Ti4+ ions. A mechanism involving O–2 and H2O2 is proposed.