Enhancing the stability of supported noble metal catalysts emerges is a major challenge in both science and industry. Herein

a heterogeneous Pd catalyst (Pd/NCF) was prepared by supporting Pd ultrafine metal nanoparticles (NPs) on nitrogen-doped carbon;synthesized by using F127 as a stabilizer

as well as chitosan as a carbon and nitrogen source. The Pd/NCF catalyst was efficient and recyclable for oxidative carbonylation of phenol to diphenyl carbonate

exhibiting higher stability than Pd/NC prepared without F127 addition. The hydrogen bond between chitosan (CTS) and F127 was enhanced by F127

which anchored the N in the free amino group

increasing the N content of the carbon material and ensuring that the support could provide sufficient N sites for the deposition of Pd NPs. This process helped to improve metal dispersion. The increased metal-support interaction

which limits the leaching and coarsening of Pd NPs

improves the stability of the Pd/NCF catalyst. Furthermore

density functional theory calculations indicated that pyridine N stabilized the Pd

2+

species

significantly inhibiting the loss of Pd

2+

in Pd/NCF during the reaction process. This work provides a promising avenue

towards enhancing the stability of nitrogen-doped carbon-supported metal catalysts.