Structural evolution and catalytic performance of DuPont V-P-O/SiO2 materials designed for fluidized bed applications

Dummer, Nicholas ORCID: https://orcid.org/0000-0002-0946-6304, Weng, Weihao, Kiely, Carol, Carley, Albert Frederick, Bartley, Jonathan Keith ORCID: https://orcid.org/0000-0003-4640-541X, Kiely, Christopher John ORCID: https://orcid.org/0000-0001-5412-0970 and Hutchings, Graham John ORCID: https://orcid.org/0000-0001-8885-1560 2010. Structural evolution and catalytic performance of DuPont V-P-O/SiO2 materials designed for fluidized bed applications. Applied Catalysis A: General 376 (1-2) , pp. 47-55. 10.1016/j.apcata.2009.10.004

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Abstract

An industrial V-P-O catalyst (DuPont), comprising vanadyl pyrophosphate crystallites encapsulated by a silica shell, has been investigated. Reaction evaluation for butane oxidation was conducted over (i) the catalyst precursor, (ii) the calcined precursor and (iii) equilibrated material (2 years on-line) in a fixed-bed reactor. Characterization was conducted on these three samples by XRD, SEM, TEM and XPS. The core–shell particles have also been examined with a novel X-ray ultramicroscopy (XuM) technique which reveals the internal structure without having to section the material. The microstructural and surface compositional changes that have occurred over the course of its industrial lifespan in a fluidized bed reactor are correlated with the catalytic activity measurements.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Chemistry Cardiff Catalysis Institute (CCI)
Subjects:	Q Science > QD Chemistry
Publisher:	Elsevier
ISSN:	0926-860X
Last Modified:	17 Oct 2022 10:06
URI:	https://orca.cardiff.ac.uk/id/eprint/6828

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