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          Institute: Fritz-Haber-Institut     Collection: Inorganic Chemistry     Display Documents

ID: 398656.0, Fritz-Haber-Institut / Inorganic Chemistry
How important is the (001) plane of M1 for selective oxidation of propane to acrylic acid?
Authors:Celaya Sanfiz, Almudena; Hansen, Thomas W.; Sakthivel, Ayyamperumal; Trunschke, Annette; Schlögl, Robert; Knoester, A.; Brongersma, H. H.; Looi, Ming Hong; Abd Hamid, Sharifah Bee
Research Context:selective oxidation over MoV-based catalysts
Date of Publication (YYYY-MM-DD):2008-07-03
Title of Journal:Journal of Catalysis
Journal Abbrev.:J. Catal.
Start Page:35
End Page:43
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:The role of the (001) crystallographic plane of the M1 phase of MoVTeNb mixed oxide catalysts in selective oxidation of propane to acrylic acid has been addressed by investigating a phase-pure M1 material preferentially exposing this surface. A model catalyst has been prepared by com-plete silylation of M1 followed by breakage of the SiO2 covered needles. Using this approach, the reactivity of the M1 (001) surface has been investigated by combining a micro-reactor study of propane oxidation with High-Sensitivity Low Energy Ion Scattering (HS-LEIS). Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) have been used to study shape and microstructure of the model system and to verify the surface exposure of the model catalyst. The specific formation rate of acrylic acid on the model catalyst is similar to that on the phase-pure M1 reference material indicating that the (001) plane of the M1 crystal structure does not possess enhanced catalytic properties com-pared to the lateral surface of M1 needles in propane oxidation.
Free Keywords:MoVTeNb Oxide Catalyst; M1; Propane Oxidation; Propane Ammoxidation; Low-Energy Ion Scattering; LEIS
External Publication Status:published
Document Type:Article
Communicated by:Robert Schlögl
Affiliations:Fritz-Haber-Institut/Inorganic Chemistry/Preparation
Fritz-Haber-Institut/Inorganic Chemistry/Microstructure
Fritz-Haber-Institut/Inorganic Chemistry/Inorganic Chemistry
External Affiliations:Calipso B.V., P.O. Box 513, 5600 MB Eindhoven, The Netherlands
COMBICAT, University Malaya, 50603 Kuala Lumpur, Malaysia
Identifiers:URL: [only for subscriber]
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