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Title: Heterogeneous catalytic oxidation of pyridines to N-oxides under mild conditions using tungsten-loaded TiO2
Authors: Li, QF
Luo, W
Lu, W
Wang, Z
Keywords: Catalytic properties
Pyridine N-oxides
Tungsten-loaded TiO2
Issue Date: 2016
Publisher: Akademiai Kiado
Source: Reaction kinetics, mechanisms and catalysis, 2016, v. 119, no. 1, p. 235-243 How to cite?
Journal: Reaction kinetics, mechanisms and catalysis 
Abstract: The heterogeneous catalytic oxidation of pyridines to pyridine N-oxides has been studied using tungsten-loaded TiO2 as the catalyst and hydrogen peroxide as the green oxidant. The catalysts were synthesized by a simple impregnation technique and characterized by X-ray powder diffraction, Raman spectroscopy, transmission electron microscopy, energy dispersion X-ray spectroscopy, X-ray photoelectron spectroscopy. The catalytic performances of the catalysts were evaluated by the N-oxidation of pyridines with 30 wt% H2O2 solution as an environmentally friendly oxidant at room temperature. These processes serve as an efficient method to prepare a variety of pyridine-N-oxides in modest to high yields, and the pyridine N-oxides could be easily separated from the heterogeneous catalytic system. This study will provide a useful strategy for preparation of heterocyclic N-oxides in the mild condition.
ISSN: 1878-5190 (print)
1878-5204 (online)
DOI: 10.1007/s11144-016-1041-6
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