Reaction Kinetics and Catalysis Letters, Vol.87, No.2, 387-394, 2006
Mechanism of beta-picoline oxidation to nicotinic acid on V-Ti-O catalyst as studied by in situ FTIR
In situ FTIR spectroscopy was used to study the interaction of beta-picoline with the surface of a V-Ti-O catalyst in the temperature range of 120-300 degrees C. beta-picoline was found to react with the Lewis acid sites of the catalyst to form a nitrogen-coordinated complex. This complex turns into an aldehyde-like complex at 150-250 degrees C and then into a nicotinate, which is a direct precursor of nicotinic acid.