Catalytic Oxidation of Ammonia to NO over Perovskite-type LaMnO3 and LaVO4 Catalysts

Catalytic Oxidation of Ammonia to NO over Perovskite-type LaMnO3 and LaVO4 Catalysts

Catalytic oxidation of NH 3 to NO + NO 2 (NO X ) over perovskite-type LaMnO 3 and LaVO 4 prepared by sol–gel was studied. X-ray diffractometry and scanning electron microscopy analyses confirmed that the prepared LaMnO 3 and LaVO 4 had perovskite-type porous structure, and a specific surface area of...

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Veröffentlicht in:Catalysis letters 2011-08, Vol.141 (8), p.1215-1218
Hauptverfasser: Hou, Tianfeng, Yang, Hangsheng, Fan, Xiaoyu, Zhang, Xiaobin
Format: Artikel
Sprache:eng
Schlagworte:
Ammonia
Catalysis
Catalytic oxidation
Chemistry
Chemistry and Materials Science
Colloidal gels. Colloidal sols
Colloidal state and disperse state
Exact sciences and technology
General and physical chemistry
Industrial Chemistry/Chemical Engineering
Lanthanum compounds
Nitrogen dioxide
Organometallic Chemistry
Oxidation
Perovskites
Physical Chemistry
Porous materials
Scanning electron microscopy
Sol-gel processes
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
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Zusammenfassung:Catalytic oxidation of NH 3 to NO + NO 2 (NO X ) over perovskite-type LaMnO 3 and LaVO 4 prepared by sol–gel was studied. X-ray diffractometry and scanning electron microscopy analyses confirmed that the prepared LaMnO 3 and LaVO 4 had perovskite-type porous structure, and a specific surface area of 33.58 m 2 /g and 1.2 m 2 /g for LaMnO 3 and LaVO 4 was measured by BET, respectively. The catalytic oxidation of ammonia to NO X was found to begin at 350 °C, and approximately 88 and 95% of NH 3 was oxidized to NO X at 600 °C over LaMnO 3 and LaVO 4 , respectively. Graphical Abstract The catalytic oxidation of ammonia to NO was found to begin at 350 °C, and approximately 88 and 95% of NH 3 was oxidized to NO at 600 °C over LaMnO 3 and LaVO 4 , respectively.
ISSN:1011-372X
1572-879X
DOI:10.1007/s10562-011-0634-y