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Reaction pathways for selective oxidation of propane to acrolein over Ce-Ag-Mo-P-O catalysts

Paper ID Volume ID Publish Year Pages File Format Full-Text
43074 45954 2009 8 PDF Available
Title
Reaction pathways for selective oxidation of propane to acrolein over Ce-Ag-Mo-P-O catalysts
Abstract

The reaction pathways for selective oxidation of propane to acrolein on Ce0.1Ag0.3Mo0.5P0.3Ox catalyst were investigated by three methods, (i) steady-state reaction test of the individual oxidation of propane and the probe molecule of possible reaction intermediates, (ii) temperature-programmed surface reaction (TPSR) study of propane oxidation in presence of gas phase O2 or not, and (iii) in situ Raman spectroscopy investigation of propane oxidation and propylene oxidation on the catalyst. Based on the obtained results, three possible reaction pathways for selective oxidation of propane to acrolein on the catalysts are proposed. The major reaction pathway is that propylene (π-allyl species) is produced from the activation of the methylene C–H bond of propane and further oxidizes to acrolein through σ-allyl species. However, the presence of gas phase O2 favors the formation of acrolein in propane oxidation on the catalyst.

Graphical abstractThree possible reaction pathways for selective oxidation of propane over Ce0.1Ag0.3Mo0.5P0.3Ox catalyst are proposed. Path II is the major reaction pathway in which propylene (π-allyl species) is produced from the activation of the methylene C–H bond of propane and further oxidizes to acrolein through σ-allyl species on the catalyst.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Selective oxidation; Propane; Acrolein; Intermediate; Reaction pathways
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Reaction pathways for selective oxidation of propane to acrolein over Ce-Ag-Mo-P-O catalysts
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 353, Issue 1, 31 January 2009, Pages 24–31
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Price was $35.95
You save - $31
Price after discount Only $4.95
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