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

Conte, Marco, Budroni, Gerolamo, Bartley, Jonathan Keith, Taylor, Stuart Hamilton, Carley, Albert Frederick, Schmidt, Andi, Murphy, Damien Martin, Girgsdies, Frank, Ressler, Thorsten, Schlögl, Robert and Hutchings, Graham John 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: 15 Dec 2017 08:36
URI: http://orca.cf.ac.uk/id/eprint/1408

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Cited 51 times in Web of Science. View in Web of Science.

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