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Oxidation of n-pentane to phthalic or maleic anhydride: The role of the VPO catalyst structural disorder

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Sobalik, Z Gonzalez, S. Ruiz, Patricio [UCL] Delmon, Bernard [UCL]

Vanadium phosphate catalysts are obtained from precursors prepared by a two-step synthesis. In the first step, a VOPO4-mixed isobutanol-water intercalate was obtained by precipitation from a solution containing vanadyl isobutoxide, K3PO4 and carefully adjusted water content (precursor A). In the second step, precursor B was formed by reflux of precursor A in (i) an inert (n-octane) or (ii) reductive (isobutanol) medium. By such a procedure, precursors and catalysts (with P/V atomic ratio equal to 1.05) displaying widely different structural defects (XRD, IR) were prepared. Catalysts were tested in the oxidation of n-pentane into maleic (AM) and phthalic (PA) anhydrides. Formation of PA demands a highly ordered structure, while AM could be formed on a highly defective VPO catalyst.

Document type Communication à un colloque (Conference Paper) – Présentation orale avec comité de sélection
Publication date 1997
Language Anglais
Conference "3rd World Congress on Oxidation Catalysis", SAN DIEGO(California) (Sep 21-26, 1997)
Journal information "Studies in Surface Science and Catalysis" - Vol. 110, p. 1213-1222 (1997)
Peer reviewed yes
issn 0167-2991
Publisher Elsevier Science Publ B V (Amsterdam)
Affiliation UCL - Autre
Links
Bibliographic reference Sobalik, Z ; Gonzalez, S. ; Ruiz, Patricio ; Delmon, Bernard. Oxidation of n-pentane to phthalic or maleic anhydride: The role of the VPO catalyst structural disorder.3rd World Congress on Oxidation Catalysis (SAN DIEGO(California), Sep 21-26, 1997). In: Studies in Surface Science and Catalysis, Vol. 110, p. 1213-1222 (1997)
Permanent URL http://hdl.handle.net/2078.1/62577