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Catalytic activity for methane combustion of the perovskite-type La1−xSrxCoO3−δ oxide prepared by the urea decomposition method

Paper ID Volume ID Publish Year Pages File Format Full-Text
47258 46465 2010 7 PDF Available
Title
Catalytic activity for methane combustion of the perovskite-type La1−xSrxCoO3−δ oxide prepared by the urea decomposition method
Abstract

Four methods were adopted to prepare perovskite-type oxide with molar ratio of La/Sr/Co = 0.9/0.1/1.0. The oxide prepared by the urea decomposition method showed the highest catalytic activity for methane combustion and a good durability at 600 °C for 90 h. Surface structure features of this oxide were discussed by use of XPS data. This method was further applied to prepare other perovskite oxides with nominal degree of substitution x = 0.0, 0.2 and 0.3. Relation of catalytic activity with degree of substitution was discussed in view of cooperation of surface lattice oxygen vacancy with surrounding cobalt ions at lower oxidation states.

Keywords
Perovskite; Catalytic combustion; Oxygen non-stoichiometry; Methane; XPS
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Catalytic activity for methane combustion of the perovskite-type La1−xSrxCoO3−δ oxide prepared by the urea decomposition method
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 98, Issues 3–4, 1 August 2010, Pages 147–153
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Price was $35.95
You save - $31
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