4.6 Article

Synthesis and characterization of (Mo0.52V0.38W0.1)2O5 used as a catalyst in the oxidative dehydrogenation of ethane

Journal

JOURNAL OF SOLID STATE CHEMISTRY
Volume 317, Issue -, Pages -

Publisher

ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jssc.2022.123657

Keywords

MoVW mixed Oxides; R-Nb 2 O 5 structure; Oxidative dehydrogenation; Ethane; Ethene

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This study investigates the oxidative dehydrogenation of ethane using mixed molybdenum vanadium and tungsten oxides. The prepared oxides exhibit stability and selectivity in the reaction process.
This work presents a study of mixed molybdenum vanadium and tungsten oxides applied to oxidative dehy-drogenation of ethane (ODE). Different oxides were prepared by a microwave-assisted hydrothermal method using oxalic acid as a reducing agent to obtain a crystalline phase of composition (Mo0.52V0.38W0.1)2O5. The materials were studied by XRF, BET, X-ray powder diffraction (XRD), transmission electron microscopy, IR, UV-Vis, TPR-H2 and XPS spectroscopy. The structure with space group C2/m is closely related to that of R-Nb2O5 with cell parameters a = 1215.1 p.m., b = 374.2 p.m., c = 402.0 p.m., and beta = 90.70 degrees. This phase is stable under reaction and active and selective to ethylene in the ODE reaction. Comparison with the literature indicates that R-Nb2O5-type matrices constitute an alternative to Mo5O14-type oxides to control the selectivity of active species in ODE.

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