Selective Oxidation of Alcohols in Gas Phase Using Light-Activated Titanium Dioxide

Effect of Surface Treatment on the Selective Photocatalytic Oxidation of Benzyl Alcohol into Benzaldehyde by O2 on TiO2 Under Visible Light

“…Meanwhile, the photo-oxidation of alcohol into aldehyde or ketone has been widely studied on TiO 2 [4][5][6][7][8][9][10][11][12][13][14][15][16] and on Nb 2 O 5 [17,18]. In particular, the selective photocatalytic oxidation of aromatic compounds such as benzyl alcohol in the presence of O 2 under only UV-light irradiation has previously been reported on TiO 2 in the gas phase [9], in acetonitrile [10,11], or in aqueous solution [12][13][14][15][16].…”

Titania Photocatalysts for Selective Oxidations in Water

“…[11][12][13] Thus, for safety and environmental reasons, the development of clean catalytic processes with high conversions and selectivities and the use of innocuous solvents have been among the major goals of chemistry research during the last decade. [12] Heterogeneous photocatalysis has been used successfully for partial oxidation of alcohols in the gas [14,15] and liquid phase, using organic solvents, [16][17][18] affording high yields in some cases. In our investigations into the influence of the features of photocatalysts on the selective oxidation of aromatic alcohols to the corresponding aldehydes, organics-free water was used as solvent.…”

Photocatalytic Selective Oxidation of 4‐Methoxybenzyl Alcohol to Aldehyde in Aqueous Suspension of Home‐Prepared Titanium Dioxide Catalyst

“…Hydrocarbons were oxidised in aqueous TiO 2 suspensions to obtain alcohols and carbonyl compounds in the presence of artificial irradiation, [6] whereas sunlight induced functionalisation of some heterocyclic bases in the presence of polycrystalline TiO 2 in water/acetonitrile solvents. [7] Selective oxidation of alcohols to the corresponding aldehydes and ketones was performed either in the gas phase [8] or in the liquid phase using acetonitrile as solvent, [9,10] in some cases affording high yields. Remarkably, attempts at performing the selective photocatalytic oxidation of alcohols to aldehydes in organic-free water are not reported in the literature, to the best of our knowledge.…”