Vanadium Oxide‐Nitride Composites for Catalytic Oxidative C−C Bond Cleavage of Cyclohexanol into Lactones with Dioxygen. Issue 14 (19th May 2020)

• Record Type: Journal Article
• Authors: Xiao, Chuhong; Du, Zhongtian; Li, Shaojie; Zhao, Yanbin; Liang, Changhai
• Is Part Of: ChemCatChem. Volume 12:Issue 14(2020)
• Page Start: 3650
• Page End: 3655
• Publication Date: 2020-05-19
• Subjects: Lactones -- Oxidation -- Heterogeneous catalysis -- Vanadium -- C−C bond cleavage; Catalysis -- Periodicals; 541.39505
• DOI: 10.1002/cctc.202000288
• Languages: English
• ISSNs: 1867-3880

Abstract

Abstract: Selective catalytic oxidative C−C bond cleavage with dioxygen is useful and challenging to prepare oxygenated fine chemicals. Herein we fabricated vanadium oxide–nitride composites as catalysts via a facile thermal treatment process, and the surface composition could be tuned by the thermal treatment temperature, which could affect catalytic oxidation of cyclohexanol significantly. By using such a V−N−C composite prepared at 500 °C, cyclohexanol could be selectively oxidized with dioxygen into lactones including δ‐valerolactone and γ‐butyrolactone, rather than common dicarboxylic acids. Cyclohexanone and 2‐cyclohexen‐1‐one were verified as two key intermediates. V 3+ species in the form of vanadium nitride and vanadium (III) oxide were detected, and well dispersed on amorphous carbon with a low degree of graphitization. These findings will provide a reference for catalytic oxidative C−C bond cleavage with molecular oxygen under mild reaction conditions. Abstract : V −N −C catalysts were prepared via a thermal treatment process for catalytic oxidative C−C bond cleavage with molecular oxygen. Cyclohexanol was selectively oxidized with dioxygen into lactones including δ‐valerolactone and γ‐butyrolactone, rather than common dicarboxylic acids. Cyclohexanone and 2‐cyclohexen‐1‐one were verified as two key intermediates, and vanadium nitride and vanadium (III) oxide were detected on the surface of V−N−C‐500.