Platinum catalysed aqueous alcohol oxidation: experimental studies and reaction model discrimination

Promotional effects of chemisorbed oxygen and hydroxide in the activation of C–H and O–H bonds over transition metal surfaces

“…Atomic oxygen (O*) is an important intermediate that is formed in many catalytic systems [1] carried out over transition metal catalysts in the presence of oxygen or water including CO oxidation [2][3][4], methane partial oxidation and reforming [5][6][7][8][9][10], alcohol oxidation [11][12][13][14][15][16] or oxygen reduction [16][17][18][19][20][21]. These reactions are often carried out on supported transition metal nanoparticles which are predominantly comprised of low-index terraces.…”

A simple discrimination of the promoter effect in alcohol oxidation and dehydrogenation over platinum and palladium

“…In some reactions, such as the oxidation of aromatic alcohols, very high reaction rates have been reported (e.g., [6,7]), whereas in other cases serious catalyst deactivation hinders the practical application of the method [8][9][10]. According to the most accepted model, the reaction obeys a dehydrogenation mechanism and the coproduct hydrogen reacts with adsorbed oxygen to form water [11].…”

Oxidation of Alcohols with Molecular Oxygen

“…The results of some electrochemical [98,99] and EXAFS [100] studies have indicated a considerable oxygen coverage of the metal surface during alcohol oxidation. A feasible interpretation of this would be that oxygen interacts directly with the adsorbed alcohol (or alcoholate) in the rate-determining step, and this model is supported also by numerous kinetic studies [101,102].…”