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Catalytic performance of NO oxidation over LaMeO3 (Me = Mn, Fe, Co) perovskite prepared by the sol–gel method

Paper ID Volume ID Publish Year Pages File Format Full-Text
50920 46821 2013 4 PDF Available
Title
Catalytic performance of NO oxidation over LaMeO3 (Me = Mn, Fe, Co) perovskite prepared by the sol–gel method
Abstract

•The sol–gel method is appropriate for the single phase of LaMeO3 (Me = Mn, Fe, Co) perovskite.•LaCoO3 exhibited the highest activity for NO oxidation reaction.•After hydrothermal ageing, the crystallite size increased and surface area decreased drastically.•The active oxygen and adsorbed NO species play key role in the NO oxidation reaction.

The catalytic performance of LaMeO3 (Me = Mn, Fe, Co) perovskite prepared by a sol–gel method was studied. These catalysts were characterized by X-ray diffraction (XRD), N2 adsorption (BET), H2 temperature programmed reduction (TPR), NO temperature programmed desorption (TPD) and CO–O2 pulse. LaCoO3 exhibited the best activity than that of LaFeO3 and LaMnO3 even after hydrothermal ageing. The activity sequence is in accordance with the reducibility of the samples. The activated oxygen species and adsorbed NO play key roles in the NO oxidation reaction.

Keywords
Pervoskite catalyst; NO oxidation; Active oxygen; NO adsorption
First Page Preview
Catalytic performance of NO oxidation over LaMeO3 (Me = Mn, Fe, Co) perovskite prepared by the sol–gel method
Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 37, 5 July 2013, Pages 105–108
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis