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Ammoxidation of propane over V-Sb and V-Sb-Nb mixed oxides

Paper ID Volume ID Publish Year Pages File Format Full-Text
44241 46011 2006 7 PDF Available
Title
Ammoxidation of propane over V-Sb and V-Sb-Nb mixed oxides
Abstract

Pure VSbO4 phase is not active for propane ammoxidation, unless some segregated α-Sb2O4 is present on its surface. Surface vanadium may be necessary to activate propane. For the ternary Sb-V-Nb oxide catalysts: Sb-V-O, Nb-V-O and Sb-Nb-O phases may form. SbNbO4 is inert and forms at the expense of efficient Sb-V-O and V-Nb-O phases. The extent of formation of these phases strongly depends on the preparation method. The Sb precursor determines if V-Sb or Nb-Sb is the preferred interaction. Tuning the interaction of Sb with the other elements affects the catalyst structure and performance.

Keywords
V-Sb-Nb-O; V-Sb-O; Oxidation; Ammoxidation; Propane; Acrylonitrile; Structure–activity relationship; In situ Raman; XRD
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Ammoxidation of propane over V-Sb and V-Sb-Nb mixed oxides
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 298, 10 January 2006, Pages 1–7
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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