Title MCM-48-supported vanadium oxide catalysts, prepared by the molecular designed dispersion of $VO(acac)_{2}$ : a detailed study of the highly reactive MCM-48 surface and the structure and activity of the deposited $VO_{x}$MCM-48-supported vanadium oxide catalysts, prepared by the molecular designed dispersion of $VO(acac)_{2}$ : a detailed study of the highly reactive MCM-48 surface and the structure and activity of the deposited $VO_{x}$ Author Baltes, M. Cassiers, K. Van Der Voort, P. Weckhuysen, B.M. Schoonheydt, R.A. Vansant, E.F. Faculty/Department Faculty of Sciences. Chemistry Research group Department of Chemistry Laboratory of adsorption and catalysis Publication type article Publication 2001San Diego, Calif., 2001 Subject Chemistry Source (journal) Journal of catalysis Journal of catalysis. - San Diego, Calif. Volume/pages 197(2001):1, p. 160-171 ISSN 0021-9517 ISI 000166505500018 Carrier E Target language English (eng) Full text (Publishers DOI) Affiliation University of Antwerp Abstract The molecular designed dispersion of vanadyl acetylacetonate (VO(acac)(2)) is used to prepare MCM-48-supported vanadium oxide catalysts. The complex is deposited on the MCM-48 surface and subsequently thermally converted into the supported vanadium oxide. A thorough study of the interaction of the VO(acac)(2) with the MCM-48 support by ESR spectroscopy and chemical methods reveals that the MCM-48 surface exhibits a remarkably higher chemical reactivity in comparison to amorphous silica, which is attributed to the presence of very reactive strained siloxane bridges on the MCM-48 surface. According to the BET, XRD, and FTIR study of the supported vanadium oxide catalysts the unique structural properties of MCM-48 are maintained. Characterization by FTIR, Raman, and UV-vis diffuse reflectance spectroscopy reveals the presence of different VO, structures (monomers, polymers, and crystals) as a function of the vanadium loading (0-6.5 wt% V). The oxidation of methanol similarly shows increasing conversion and formaldehyde yields with increasing loading. Structural characterization of the catalyst after the reaction reveals that the MCM-48-supported vanadium oxides withstand catalytic reaction conditions. (C) 2001 Academic Press. E-info https://repository.uantwerpen.be/docman/iruaauth/b50fb7/def4197.pdf http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000166505500018&DestLinkType=RelatedRecords&DestApp=ALL_WOS&UsrCustomerID=ef845e08c439e550330acc77c7d2d848 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000166505500018&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=ef845e08c439e550330acc77c7d2d848 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000166505500018&DestLinkType=CitingArticles&DestApp=ALL_WOS&UsrCustomerID=ef845e08c439e550330acc77c7d2d848 Handle