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Preparation and characterization of LaFe1−xMgxO3/Al2O3/FeCrAl: Catalytic properties in methane combustion

Paper ID Volume ID Publish Year Pages File Format Full-Text
49106 46549 2006 9 PDF Available
Title
Preparation and characterization of LaFe1−xMgxO3/Al2O3/FeCrAl: Catalytic properties in methane combustion
Abstract

A series of the LaFe1−xMgxO3/Al2O3/FeCrAl catalysts (x = 0–1) were prepared. The structure of the catalysts was characterized using X-ray powder diffraction (XRD), scanning electron microscope (SEM) and temperature-programmed reduction (TPR). The catalytic activity of the catalysts for the methane combustion was evaluated. The catalytic stability of the catalysts for 100 h was tested with a fixed bed reactor. The results indicated that in the LaFe1−xMgxO3/Al2O3/FeCrAl catalysts the phase structure were the LaFe1−xMgxO3 perovskite-type oxides, α-Al2O3 and γ-Al2O3. The surface particle shape and size were more different with the variety of the molar ratio of Fe to Mg in the LaFe1−xMgxO3. The Fe component of the LaFe1−xMgxO3/Al2O3/FeCrAl catalysts played an important role to the catalytic activity for the methane combustion and the order of the catalytic activity in terms of x was 0.5 > 0.3 > 0.7 > 0.9 > 0 > 0.1 > 1. In the LaFe1−xMgxO3/Al2O3/FeCrAl catalysts (x = 0.1–0.9) the Fe and Mg components can promote the thermal stability. There were the stronger interaction among the LaFe1−xMgxO3 perovskite-type oxides and the Al2O3 washcoats and the FeCrAl support.

Keywords
Monolithic catalysts; Washcoat; LaFe1−xMgxO3; Methane catalytic combustion; XRD; SEM; TPR
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Preparation and characterization of LaFe1−xMgxO3/Al2O3/FeCrAl: Catalytic properties in methane combustion
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 66, Issues 3–4, 20 July 2006, Pages 265–273
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