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Al2O3-Supported W–V–O bronze catalysts for oxidative dehydrogenation of ethane

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Abstract

Supported vanadium-containing hexagonal tungsten bronzes (HTBs) were prepared for the first time using a combination of a new soft synthetic procedure and fine-tuned heat treatments. The characterization of heat-treated samples indicates that both unsupported and Al2O3-supported materials present mainly vanadium-containing crystals with HTB structure smaller in the supported materials. Raman, diffuse reflectance UV-visible and EPR spectroscopic results suggest the presence of different V species depending on the V loading and catalyst composition. When used as catalysts for ethane oxidative dehydrogenation (ODH), selected supported vanadium-HTBs show selectivity to ethylene as high as 80% at ethane conversion of around 18%. These values position these new materials among the most active and selective catalysts so far reported in the literature for ethane ODH over supported vanadium oxide catalysts.

Graphical abstract: Al2O3-Supported W–V–O bronze catalysts for oxidative dehydrogenation of ethane

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Supplementary files

Article information


Submitted
17 Jun 2020
Accepted
02 Oct 2020
First published
08 Oct 2020

Catal. Sci. Technol., 2020, Advance Article
Article type
Paper

Al2O3-Supported W–V–O bronze catalysts for oxidative dehydrogenation of ethane

S. Benomar, A. Chieregato, A. Masso, M. D. Soriano, J. A. Vidal-Moya, T. Blasco, R. Issaadi and J. M. López Nieto, Catal. Sci. Technol., 2020, Advance Article , DOI: 10.1039/D0CY01220C

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