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Preparation and catalytic activities of the novel double perovskite-type oxide La2CuNiO6 for methane combustion

Paper ID Volume ID Publish Year Pages File Format Full-Text
50673 46808 2012 4 PDF Available
Title
Preparation and catalytic activities of the novel double perovskite-type oxide La2CuNiO6 for methane combustion
Abstract

Rare earth perovskite-type oxides La2CuNiO6 and LaNiO3 were prepared by a sol–gel method and investigated as catalysts for the combustion of methane. The obtained powders were characterized by XRD, H2-TPR, XPS and M techniques. XRD data shows that both La2CuNiO6 and LaNiO3 formed single-phase perovskite-type oxides. The experimental results show that the catalytic activity of La2CuNiO6 was much higher than that of LaNiO3 because of the different structure and surface properties. This study points out a potential way to develop more active double perovskite-type catalysts for the combustion of methane.

Graphical abstractThe hysteresis loops at room temperature of (a) La2CuNiO6 and (b) LaNiO3 were shown. Compared with the single perovskite-type oxide LaNiO3 and the mechanical mixture of LaNiO3 and LaCuO3 at 1:1 mole ratio, La2CuNiO6 exhibited optimized catalytic performance. This could be correlated well with the catalyst reducibility and the structure and surface properties.Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights► La2CuNiO6 showed better catalytic activity for methane combustion. ► Oxygen vacancy ratio has a great effect on catalytic activity. ► Magnetics analysis shows that the hysteresis loop of La2CuNiO6 is unique.

Keywords
Rare earth; Double perovskite-type oxide; Methane catalytic combustion
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Preparation and catalytic activities of the novel double perovskite-type oxide La2CuNiO6 for methane combustion
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 21, 5 May 2012, Pages 38–41
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