MnO _X ‐CeO ₂ Bimetal Oxides Derived from Ce‐Based MOFs as a Synergistic Catalyst Boost the Aerobic Oxidative Dehydrogenation of N‐Heterocycles

The development of synthetic methods for N-heterocyclic compounds have garnered considerable attention due to their significance in diverse chemical processes. Among various synthesis methods, the direct oxidative dehydrogenation of saturated substances to N-heteroaromatics is a simple and efficient method. This study utilized the pyrolysis of Mn/Ce-BTC MOFs precursor to prepare MnO_X-CeO₂ composites as a heterogeneous catalyst for the aerobic oxidative dehydrogenation of N-heterocycles. The MnO_X-CeO₂ composites were analyzed with various characterization techniques including XRD, SEM, TEM, BET, XPS, ICP-OES and Raman spectroscopy. The detailed findings from experiments indicate that the catalytic activity of the composites has been significantly improved due to the synergistic effect of MnO_X-CeO₂ and the abundant oxygen vacancies on the surface of the catalyst. And the related mechanism experiments reveal that reactive oxygen species (ROS) are involved in this catalytic system. Furthermore, MnO_X-CeO₂ composites retain excellent catalytic performance even after ten recycles.