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Influence of preparation methods of LaCoO3 on the catalytic performances in the decomposition of N2O

Paper ID Volume ID Publish Year Pages File Format Full-Text
47592 46477 2009 9 PDF Available
Title
Influence of preparation methods of LaCoO3 on the catalytic performances in the decomposition of N2O
Abstract

This study reports the potential interest of LaCoO3 in the catalytic decomposition of N2O from nitric acid plants. Typically, the exhaust gas contains NO, water and O2 which usually induce strong inhibiting effects depending on the surface properties of the solids particularly the surface mobility of oxygen from LaCoO3. Different preparation methods have been implemented, involving citrate route, reactive grinding and the use of templates, which lead to different structural and textural properties examined by X-ray diffraction, transmission electron microscopy and N2 physisorption. EDX analysis and XPS measurements also revealed that different surface composition may alter subsequent interactions between the surface and the reactants and related catalytic performances. LaCoO3 prepared by reactive grinding was found to be the most active catalyst due to a high specific surface area but the presence of Fe and Zn impurities inherent to the preparation method were suggested to interfere on the catalytic performances.

Keywords
Nitrous oxide; N2O decomposition; Perovskite; XPS; LaCoO3
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Influence of preparation methods of LaCoO3 on the catalytic performances in the decomposition of N2O
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 91, Issues 3–4, 28 September 2009, Pages 596–604
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Price was $35.95
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