Ga–Al Mixed‐Oxide‐Supported Gold Nanoparticles with Enhanced Activity for Aerobic Alcohol Oxidation

Biomass Derived Chemicals: Furfural Oxidative Esterification to Methyl-2-furoate over Gold Catalysts

“…Mesostructured Ga-Al mixed-oxide solid solutions have been proposed as highly promising supports for the fabrication of exceptionally effective gold catalysts for the aerobic alcohol oxidation under mild conditions [83]. Very high conversion and selectivity were obtained for several aromatic and aliphatic alcohols (such as for example benzyl alcohol and variously substituted benzyl alcohols) to the corresponding aldehyde or in some cases to the corresponding ketone under mild conditions (90˝C, under O 2 at atmospheric pressure).…”

The benzaldehyde oxidation paradox explained by the interception of peroxy radical by benzyl alcohol

“…Benzyl alcohol is one of the most widely studied substrates 6,9,10 . In the literature, many researchers have reported the aerobic oxidation of benzyl alcohol to benzaldehyde, using a variety of catalytic systems, including supported metal catalysts, with yields up to B99% [9][10][11][12][13][14] , implying that further oxidation to give benzoic acid does not take place. For example, we recently reported the solvent-less, aerobic oxidation of benzyl alcohol to benzaldehyde using supported gold or gold-palladium nanoparticles as catalysts with a selectivity of 99% to benzaldehyde 6,[15][16][17][18] .…”

Preparation and characterization of a composite of gold nanoparticles and single-walled carbon nanotubes and its potential for heterogeneous catalysis

“…The Au/SWCNT catalyst gave a reactant conversion of 95% after 180min. Recent work on catalytic selective oxidation of 1-phenylethanol amongst other alcohols using nano Au supported on mixed Ga/Al oxides [47] gave a comparable conversion but required the use of a solvent whereas it has been demonstrated here that Au nanoparticles supported on SWCNT yields a conversion of ~95% in a solventless system which adheres more closely to principles of green chemistry [48] which demonstrates that using SWCNT as a support material for heterogeneous catalytic functions provides some further expansion in the area of carbon nanotube chemistry.…”