Iron-exchanged FAU zeolites: Preparation, characterization and catalytic properties for N2O decomposition

Li, L. D., Shen, Q., Li, J. J., Hao, Z. P., Xu, Z. P. and Lu, G. Q. (2008) Iron-exchanged FAU zeolites: Preparation, characterization and catalytic properties for N2O decomposition. Applied Catalysis A-general, 344 1-2: 131-141. doi:10.1016/j.apcata.2008.04.011


Author Li, L. D.
Shen, Q.
Li, J. J.
Hao, Z. P.
Xu, Z. P.
Lu, G. Q.
Title Iron-exchanged FAU zeolites: Preparation, characterization and catalytic properties for N2O decomposition
Journal name Applied Catalysis A-general   Check publisher's open access policy
ISSN 0926-860X
Publication date 2008-07-15
Year available 2008
Sub-type Article (original research)
DOI 10.1016/j.apcata.2008.04.011
Open Access Status DOI
Volume 344
Issue 1-2
Start page 131
End page 141
Total pages 11
Editor Kung, H. H.
Vedrine, J. C.
Segawa, K.
Place of publication Netherlands
Publisher Elsevier BV
Language eng
Subject C1
100708 Nanomaterials
869801 Management of Gaseous Waste from Manufacturing Activities (excl. Greenhouse Gases)
Abstract New Fe-FAU zeolitic catalysts made from large channel zeolite matrix FAU by a simple wet ion exchange method show an excellent performance in N2O catalytic decomposition. The ion exchange process was discussed in detail and the optimal conditions for wet ion exchange were proposed. The formation of various iron sites in Fe-FAU samples (isolated Fe ions, oligonuclear clusters and Fe2O3 nanoparticles) during preparation process was extensively investigated by means of UV-vis spectra, MR spectra of NO adsorption, TEM images, H-2-TPR and Al-27 MAS-NMR spectra. We have found that Fe(III)-FAU catalysts more effectively decompose N2O with/out NO-assistance than other Fe-zeolite (such as Fe-MFI) catalysts prepared in the same way. Comprehensive understanding of the structure properties and the catalytic performance suggests that different iron sites in Fe-FAU make different contributions to N2O thermal decomposition and that isolated/oligonuclear iron species contribute more due to their high accessibility towards N2O. In addition, the high durability of Fe-FAU catalysts is proposed to account for the particular interactions between iron species and zeolite framework.
Keyword Fe-zeolite catalysts
N2O decomposition
FAU
wet ion exchange
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes 10.1016/j.apcata.2008.04.011

Document type: Journal Article
Sub-type: Article (original research)
Collection: 2009 Higher Education Research Data Collection
 
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Created: Thu, 02 Apr 2009, 20:08:23 EST by Amanda Lee on behalf of School of Chemical Engineering