Direct Oxidative Esterification of Alcohols over Oxygen Vacancy Decorated Pd@Bi 2 O 2 CO 3 Catalyst Supported on N‐Doped Carbon Black

Direct oxidative esterification of alcohols to methyl benzoate has drawn tremendous attention due to the atom economy and environmental benignity. In this work, we developed a Pd@Bi 2 O 2 CO 3 catalyst with oxygen vacancies supported on N‐doped carbon black (NCB) based on a wet chemistry method. The acidification pretreatment offers NCB with large quantities of oxygen‐containing functional groups for the anchoring of the active component. The oxygen vacancies can help adsorb and activate O 2 molecules so as to accelerate the direct oxidative esterification reaction. Most importantly, Bi 2 O 2 CO 3 plays a key role in modulating the electronic properties of Pd sites, ensuring an enhanced catalytic activity at a relatively low Pd loading (99.9% for benzyl alcohol, selectivity of 95.3% for methyl benzoate), excellent cycling performance, and desirable universality towards various aromatic alcohols under mild conditions. This work presents an environmentally friendly and efficient catalytic system for aromatic alcohol oxidative esterification, demonstrating promising potential for practical industrial application.