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Characterization of iron-containing AlPO-5 as a stable catalyst for selective catalytic reduction of N2O with CH4 in the presence of steam

Paper ID Volume ID Publish Year Pages File Format Full-Text
40813 45867 2012 5 PDF Available
Title
Characterization of iron-containing AlPO-5 as a stable catalyst for selective catalytic reduction of N2O with CH4 in the presence of steam
Abstract

Iron-containing AlPO-5 prepared by isomorphous substitution and impregnation method for selective catalytic reduction (SCR) of N2O with methane in the presence of steam was investigated and characterized by nitrogen sorption, XRD, FTIR, H2-TPR, and EPR. The results indicate that AlPO-5 zeolite has a good capacity to resist steam and FeAlPO-5 has high population of isolated Fe(III) and oligonuclear Fe(III)xOy which lead to a better low-temperature and more stable activity than Fe/AlPO-5. Deactivation of Fe/AlPO-5 is ascribed to the agglomeration of Fe2O3 particles under steam condition. Combining the activity and characterization results, we deduce that isolated Fe(III) and oligonuclear Fe(III)xOy are highly active and responsible for catalytic reduction of N2O with methane at low temperature (below 500 °C). In contrast, Fe2O3 nanoparticles need high temperature (above 500 °C) to activate both catalytic reduction of N2O with methane and methane combustion.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (149 K)Download as PowerPoint slideHighlights► FeAlPO-5 shows a low-temperature and stable activity in SCR of N2O with CH4 in the presence of steam. ► Fe2O3 nanoparticles need high temperature (above 500 °C) to activate the reduction of N2O. ► The site accessibility is an important factor that determines the activity of the zeolites.

Keywords
SCR; N2O; Methane; AlPO-5; Iron species
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Characterization of iron-containing AlPO-5 as a stable catalyst for selective catalytic reduction of N2O with CH4 in the presence of steam
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volumes 435–436, 5 September 2012, Pages 27–31
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