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

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.

Automated summary

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.