Oxidative Dehydrogenation of Cyclohexane over Mg-V-O Catalysts Prepared via Citriate Complexation

Abstract:

Oxidative dehydrogenation of cyclohexane was studied over three pure Mg-V-O catalysts, which are Mg₃(VO₄)₂, Mg₂V₂O₇ and MgV₂O₆, respectively. Catalysts were prepared via citric acid complexation and characterized by N₂-adsorption, XRD, FT-IR, NH₃-TPD and H₂-TPR techniques. Among the pure magnesium vanadates, Mg₃(VO₄)₂ has the isolated active sites, weakly basic surface and lower reducibility of the metal cations, and could be recognized as the catalytic active phase. Mg₃(VO₄)₂ catalyst exhibited a better catalytic performance, on which a cyclohexene selectivity of 41.5% at cyclohexane conversion of 15.5% was obtained.

• Periodical: Advanced Materials Research (Volumes 284-286)
• Pages: 692-696
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.284-286.692
• Online since: July 2011
• Authors: Mei Jin, Ping Lu, Guo Xian Yu
• Keywords: Catalytic Active Phase, Cyclohexene, Mg-V-O Catalyst, Oxidative Dehydrogenation

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