Journal
CHEMICAL PHYSICS LETTERS
Volume 824, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.cplett.2023.140542
Keywords
Nitrogen -doped carbon nanotubes; Heck reaction; Different N species; Palladium
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The electron transfer effects of different nitrogen functional groups on Pd/N-CNT catalysts for the Heck reaction were investigated. Pd/N-CNTs were synthesized to control the percentage of different N species. The synthesis temperature significantly affected the structure of Pd/N-CNT, and the Pd-graphitic N complex was identified as the active-site in the Heck reaction.
In this study, the electron transfer effects of different nitrogen functional groups on palladium on nitrogen-doped carbon nanotube (Pd/N-CNT) catalysts for the Heck reaction were systematically investigated. Pd/N-CNTs were synthesized using a practical and scalable method via chemical vapor deposition and wet impregnation to precisely control the percentage of the different N species. Structural elucidation and catalytic performance testing revealed that the synthesis temperature significantly affected Pd/N-CNT structure. Moreover, the Pd-graphitic N complex was identified as the active-site in the Heck reaction, whereas the Pd-pyridinic N com-plex functioned as an inhibitor, while the Pd-pyrrolic N and Pd-NOx complexes were spectators.
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