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Aerobic and Additive‐free Oxidative Dehydrogenation of N ‐heterocycles over Commercial MnCO 3 ‐derived Manganese Oxides
Author(s) -
Chen Bo,
Zhao Zengbing,
Liu Fei,
Yang Shucheng,
Zhao Yili,
Cheng Lanxing
Publication year - 2020
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.202004179
Subject(s) - dehydrogenation , manganese , chemistry , x ray photoelectron spectroscopy , oxygen , oxidative phosphorylation , inorganic chemistry , catalysis , organic chemistry , chemical engineering , biochemistry , engineering
Herein, manganese oxides by simply pyrolyzing commercial MnCO 3 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 Mn 3+ and Mn 4+ 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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