Selective oxidation of benzyl alcohol to benzaldehyde in aqueous solution, at acidic conditions, through TiO2/Cu(II)/solar UV system was investigated. Different commercial TiO2 samples were tested. The best result found in terms of yield was of 35 % of benzaldehyde with respect to the initial benzyl alcohol. During each run a partial conversion of benzaldehyde to benzoic acid was also observed. The study suggested that different operative parameters, such as the composition of photocatalyst, amount of catalyst, pH, ionic components in water and the initial concentration of Cu(II) played an important role in the photocatalytic oxidation of benzyl alcohol, at the end of the process, Cu(II) could be regenerated and reused, through a re-oxidation of Cu(0), produced during the photolytic run, with air at dark. © 2011, AIDIC Servizi S.r.l.
Selective oxidation processes of organic substances by means of photocatalytic systems / Andreozzi, Roberto; Di Somma, Ilaria; Marotta, Raffaele; Spasiano, Danilo. - 24:(2011), pp. 1261-1266. (Intervento presentato al convegno 10th International Conference on Chemical and Process Engineering tenutosi a Firenze, Italy nel May 8-11 , 2011) [10.3303/CET1124211].
Selective oxidation processes of organic substances by means of photocatalytic systems
SPASIANO, Danilo
2011-01-01
Abstract
Selective oxidation of benzyl alcohol to benzaldehyde in aqueous solution, at acidic conditions, through TiO2/Cu(II)/solar UV system was investigated. Different commercial TiO2 samples were tested. The best result found in terms of yield was of 35 % of benzaldehyde with respect to the initial benzyl alcohol. During each run a partial conversion of benzaldehyde to benzoic acid was also observed. The study suggested that different operative parameters, such as the composition of photocatalyst, amount of catalyst, pH, ionic components in water and the initial concentration of Cu(II) played an important role in the photocatalytic oxidation of benzyl alcohol, at the end of the process, Cu(II) could be regenerated and reused, through a re-oxidation of Cu(0), produced during the photolytic run, with air at dark. © 2011, AIDIC Servizi S.r.l.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
