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Nanoscaled rutile active phase in Mo–V–Nb–O supported catalysts for the oxidation of propane to acrylic acid

Paper ID Volume ID Publish Year Pages File Format Full-Text
42110 45911 2010 8 PDF Available
Title
Nanoscaled rutile active phase in Mo–V–Nb–O supported catalysts for the oxidation of propane to acrylic acid
Abstract

Alumina-stabilized nanosized rutile Mo–V–Nb–O oxide phases are prepared, characterized and used for the selective oxidation of propane to acrylic acid. Coverage on alumina support, atomic Mo/V molar ratio and calcination conditions (inert vs. oxidizing) affect the structure and catalytic performance. The effect of Mo/V ratio is opposite depending on calcination atmosphere. Segregated molybdenum oxides are not efficient while partially reduced rutile-type mixed molybdenum–vanadium oxide phases are efficient for the conversion of propane to acrylic acid. Niobium species would have a structural effect, stabilizing mixed molybdenum–vanadium oxide phases.

Graphical abstractNiobium-promoted alumina-stabilized nanosized rutile oxide Mo–V–Nb–O phases are prepared, characterized and used for the selective oxidation of propane to acrylic acid. Segregated molybdenum oxides are not efficient while partially reduced rutile-type mixed molybdenum–vanadium oxide phases are efficient for the conversion of propane to acrylic acid. Niobium species would have a structural effect, stabilizing mixed molybdenum–vanadium oxide phases.Figure optionsDownload full-size imageDownload high-quality image (69 K)Download as PowerPoint slide

Keywords
Propane; Acrylic acid; V–Mo–O; V–Mo–Al–O; Rutile; Oxidation; Structure–activity relationship; In situ Raman; XRD; XPS
First Page Preview
Nanoscaled rutile active phase in Mo–V–Nb–O supported catalysts for the oxidation of propane to acrylic acid
Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 375, Issue 1, 26 February 2010, Pages 55–62
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis