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Preparation and characterization of Pd loaded Sr-deficient K2NiF4-type (La, Sr)2MnO4 catalysts for NO–CO reaction

Paper ID Volume ID Publish Year Pages File Format Full-Text
54084 46996 2015 7 PDF Available
Title
Preparation and characterization of Pd loaded Sr-deficient K2NiF4-type (La, Sr)2MnO4 catalysts for NO–CO reaction
Abstract

•Pd was deposited on La0.2Sr1.8MnO4 by liquid-phase adsorption processes and calcined at 800 °C.•XAS studies revealed that highly dispersed PdO nanoparticles were supported on the La0.2Sr1.8MnO4 the support.•The Pd/La0.2Sr1.8MnO4 catalyst prepared by the liquid-phase adsorption process exhibited higher catalytic activity for NO–CO reaction than that prepared by the impregnation method.

Pd-loaded K2NiF4-type perovskite oxides, Pd/La0.2Sr1.8−xMnO4 were prepared by liquid-phase adsorption process, and their structural and catalytic properties were investigated. Pd deposition was carried out by mixing La0.2Sr1.8MnO4 with Pd(NO3)2 in aqueous solution, followed by filtration, drying, and calcination at 800 °C. During the Pd deposition process, 5% of Sr in La0.2Sr1.8MnO4 oxides was dissolved into the aqueous phase, whereas the perovskite structure retained. The content of Pd loaded on La0.2Sr1.8MnO4 was 0.24 wt%. X-ray absorption spectroscopy studies showed that highly dispersed PdO nanoparticles were supported on Pd/La0.2Sr1.8MnO4 prepared by the liquid-phase adsorption process, whereas aggregated PdO particles were formed on Pd/La0.2Sr1.8MnO4 prepared by an impregnation method. The Pd/La0.2Sr1.8MnO4 catalyst prepared by the liquid-phase adsorption process exhibited higher catalytic activity for NO–CO reaction than the 0.24 wt% Pd/La0.2Sr1.8MnO4 catalyst prepared by the impregnation method.

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Keywords
Perovskite oxides; K2NiF4-type structure; Palladium; NO–CO reaction
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Preparation and characterization of Pd loaded Sr-deficient K2NiF4-type (La, Sr)2MnO4 catalysts for NO–CO reaction
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 251, 1 August 2015, Pages 7–13
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us