Chemically Induced Fast Solid-State Transitions of ω-VOPO4 in Vanadium Phosphate Catalysts

Conte, Marco, Budroni, Gerolamo, Bartley, Jonathan Keith ORCID: https://orcid.org/0000-0003-4640-541X, Taylor, Stuart H. ORCID: https://orcid.org/0000-0002-1933-4874, Carley, Albert Frederick, Schmidt, Andi, Murphy, Damien Martin ORCID: https://orcid.org/0000-0002-5941-4879, Girgsdies, Frank, Ressler, Thorsten, Schlögl, Robert and Hutchings, Graham John ORCID: https://orcid.org/0000-0001-8885-1560 2006. Chemically Induced Fast Solid-State Transitions of ω-VOPO4 in Vanadium Phosphate Catalysts. Science 313 (5791) , pp. 1270-1273. 10.1126/science.1130493

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Abstract

Vanadium phosphates are important catalysts for the oxidation of alkanes, and commercial catalysts comprise a complex range of V4+ and V5+ phosphates. We used three complementary in situ characterization methodologies—powder x-ray diffraction and laser Raman and electron paramagnetic resonance spectroscopies—to show that the metastable phase {omega}-VOPO4 is very sensitive to many of the reactants and products of butane oxidation. A rapid transformation from {omega}-VOPO4 to {delta}-VOPO4 occurs on exposure to butane at the reaction temperature, and hence the metastable {omega}-VOPO4 may play a role in the formation of commercial catalysts.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Cardiff Catalysis Institute (CCI) Chemistry
Subjects:	Q Science > QD Chemistry
Publisher:	American Association for the Advancement of Science
ISSN:	0036-8075
Last Modified:	16 Oct 2024 10:19
URI:	https://orca.cardiff.ac.uk/id/eprint/1408

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