(196a) Micro/Mesoporous Au@SiO2 Core-Shell Nanoparticles for Alkalinity-Independent Selective Benzyl Alcohol Oxidation
These results suggest that the pore size distribution within the inert silica shell of Au@SiO2 physically inhibits the formation of undesired products to facilitate the selective oxidation of benzaldehyde despite a basic environment which would drastically reduce selectivity under typical conditions. An activation energy study revealed an unusually low activation energy of 23 kJ/mol. Combined with overwhelmingly rate-limited Thiele moduli, the particles appear to have a lower activation energy as a result of a catalyst that is not only product selective, but mechanism selective. As such, these particles are a promising platform for analysis of the impact of functionalization on mass transport and surface chemistry discretely.