Abstract
AbstractHerein, manganese oxides by simply pyrolyzing commercial MnCO3 are found to be active and stable for aerobic oxidative dehydrogenation of N‐heterocycles in the absence of any additives. The oxides are fully characterized by XRD, BET, XPS, and SEM. The analysis results suggest that high surface area, the involvement of Mn3+ and Mn4+ species, and labile lattice oxygen are key factors for the reactions. Moreover, kinetic analysis demonstrates that the apparent activation for oxidative dehydrogenation of 1,2,3,4‐tetrahydroquinoline is 37.7 kJ mol−1, and radical anions may involve in the reaction.
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