MnOX-CeO2 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 -CeO 2 composites as a heterogeneous catalyst for the aerobic oxidative dehydrogenation of N-heterocycles. The MnO X -CeO 2 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 -CeO 2 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 -CeO 2 composites retain excellent catalytic performance even after ten recycles. Graphical The synthesized bimetallic oxides MnO X -CeO 2 by the pyrolysis of Mn/Ce-BTC MOFs have been employed as a heterogenous catalyst for the oxidative dehydrogenation of N-heterocycles to N-heteroaromatics with oxygen as the solo oxidant.