Nitric Oxide Reduction Using Hydrogen Over Perovskite Catalysts with Promotional Effect of Platinum on Catalytic Activity

Nitric Oxide Reduction Using Hydrogen Over Perovskite Catalysts with Promotional Effect of Platinum on Catalytic Activity

The catalytic activities of strontium substituted La 0.7 Sr 0.3 MnO 3 type perovskite catalysts for NO reduction using H 2 as reducing agent has been studied, which is further improved by incorporation of Pt outside (0.1 wt.%Pt/La 0.7 Sr 0.3 MnO 3 ) and inside (La 0.7 Sr 0.3 Mn 0.97 Pt 0.03 O 3 ) th...

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Veröffentlicht in:Catalysis letters 2008-06, Vol.123 (1-2), p.164-171
Hauptverfasser: Biniwale, Rajesh B., Pande, Jayshri V., Dhakad, Manju, Labhsetwar, Nitin K., Ichikawa, Masaru
Format: Artikel
Sprache:eng
Schlagworte:
Catalysis
Catalysts
Catalytic activity
Chemistry
Chemistry and Materials Science
Exact sciences and technology
General and physical chemistry
Gravimetric analysis
Industrial Chemistry/Chemical Engineering
Mass spectra
Nitric oxide
Organometallic Chemistry
Perovskites
Physical Chemistry
Platinum
Reducing agents
Reduction
Scanning electron microscopy
Selectivity
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
X-ray diffraction
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Zusammenfassung:The catalytic activities of strontium substituted La 0.7 Sr 0.3 MnO 3 type perovskite catalysts for NO reduction using H 2 as reducing agent has been studied, which is further improved by incorporation of Pt outside (0.1 wt.%Pt/La 0.7 Sr 0.3 MnO 3 ) and inside (La 0.7 Sr 0.3 Mn 0.97 Pt 0.03 O 3 ) the perovskite lattice structure. Pt shows excellent enhancement in catalytic selectivity towards N 2 when supported on the perovskite. The catalysts were characterized using thermo-gravimetric analysis (TGA), X-ray diffraction (XRD), scanning electron microscopy (SEM) and specific surface area. Catalysts evaluations were carried out using thermo-gravimetric analysis coupled with mass spectra (TG-MS).
ISSN:1011-372X
1572-879X
DOI:10.1007/s10562-008-9412-x