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Catalytic combustion of methane over La2TM0.3Zr1.7O7−δ (TM = Mn, Fe, and Co) pyrochlore oxides

Paper ID Volume ID Publish Year Pages File Format Full-Text
51328 46839 2009 4 PDF Available
Title
Catalytic combustion of methane over La2TM0.3Zr1.7O7−δ (TM = Mn, Fe, and Co) pyrochlore oxides
Abstract

La2Zr2O7 and La2TM0.3Zr1.7O7−δ (TM = Fe, Mn, and Co) pyrochlores were investigated as catalysts for methane combustion at moderate-high temperatures. They were prepared by the coprecipitation method and characterized by XRD, DSC, H2-TPR, IR, and N2 adsorption/desorption techniques. The introduction of transition metals strongly influences the Zr–O bond strength, the temperature of pyrochlore phase formation, the redox properties, and crystallite size of pyrochlores. Among the catalysts tested, La2Fe0.3Zr1.7O7−δ gives the highest catalytic activity. The catalytic activities of La2TM0.3Zr1.7O7−δ pyrochlore oxides for methane combustion were mainly dependent on the textural properties (BET area, crystallite size).

Keywords
Methane; Catalytic combustion; La2Zr2O7 pyrochlore; Transition metal doping
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Catalytic combustion of methane over La2TM0.3Zr1.7O7−δ (TM = Mn, Fe, and Co) pyrochlore oxides
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 10, Issue 8, 30 March 2009, Pages 1170–1173
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us