Abstract
The adsorption and photocatalytic oxidation of 2-propanol was studied by solid-state NMR spectroscopy over TiO2 powder and a TiO2 monolayer catalyst anchored on porous Vycor glass (TiO2 /PVG). Two adsorbed 2-propanol species were identified on the TiO2 powder, a hydrogen-bonded species and a 2-propoxide species, whereas only the H-bonded 2-propanol species was observed on TiO2/PVG. The photooxidation of 2-propanol proceeded along two parallel routes. The first occurred through the formation of acetone from the H-bonded 2-propanol species and was followed by the aldol condensation of acetone to form mesityl oxide. The subsequent photooxidation of mesityl oxide progressed slowly. Under dark conditions, mesityl oxide and its fragmentation products, acetaldehyde and isobutylene, were found to be in thermal equilibrium. The second route occurred through the relatively rapid and complete oxidation of 2-propoxide to CO2. In addition, the mobility of H-bonded 2-propanol was found to be important in the photooxida...
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
