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Characterization of MnO-doped lanthanum hexaluminate (LaMnAl11O19) in terms of selective catalytic reduction of NOx by addition of hydrocarbon reductant (HC-SCR)

Stranzenbach, Mathias und Saruhan, Bilge (2005) Characterization of MnO-doped lanthanum hexaluminate (LaMnAl11O19) in terms of selective catalytic reduction of NOx by addition of hydrocarbon reductant (HC-SCR). In: Ceramic Science and Engineering Proceedings, 26 (8), Seiten 3-10. The American Ceramic Society. 29th Int. Conference on Advance Materials and Coatings, 2005-01-22 - 2005-01-27, Cocoa Beach, Orlanda, Florida.

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Offizielle URL: http://www.x-cd.com/papers/cesp_v26_i8_003.pdf

Kurzfassung

Environmental pollution by vehicles, turbines and aircrafts has enormously increased in the last decade. New generation lean-burn combustion engines which are more effective and require less fuel consumption will raise the emission of nitrogen oxides (NOX) even more. Thus, especially in urban areas, more stringed environmental regulations are to release which can only be met by development of new catalytic materials and concepts. Rare earth oxide catalysts are reported to offer highly effective conversion of NOX by methane (CH4) in the terms of selective catalytic reduction (HC-SCR). Especially La2Oa is reported to have a high NO reduction by CH4 to N2, although its technical realization as catalyst material has not yet reported and can be challenging due to the hydroscopic property of La2O3. Complex oxide compounds containing La2Oa however can be suitable alternatives and promising candidates for technical application as catalysts. In this study, LaMnAlnOi9 is characterized in terms of HC-SCR with methane. Phase and morphological characterization of the powder synthesized by sol-gel route and coatings by electron-beam physical vapor deposition (EB-PVD) deposition was presented. LaMnAlnOi9 crystallizes to the magnetoplumbite phase at about 1000°C and is then thermally stabile up to 1400°C. FTIR spectra of pressed sol-gel powder showed that NO is adsorbed superficially and oxidized by the surface. The addition of oxygen led to changes of the spectrum in the nitritenitrate region and the formation of NO+ and N2O4 species. The EB-PVD coated LaMnAlnOi9 layer was catalytically characterized at 200°, 400° and 600 °C and showed catalytic activity towards NO depending on temperature.

elib-URL des Eintrags:https://elib.dlr.de/20121/
Dokumentart:Konferenzbeitrag (Vortrag)
Titel:Characterization of MnO-doped lanthanum hexaluminate (LaMnAl11O19) in terms of selective catalytic reduction of NOx by addition of hydrocarbon reductant (HC-SCR)
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Stranzenbach, MathiasNICHT SPEZIFIZIERTNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Saruhan, BilgeNICHT SPEZIFIZIERTNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Datum:26 Januar 2005
Erschienen in:Ceramic Science and Engineering Proceedings
Referierte Publikation:Ja
Open Access:Nein
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Band:26
Seitenbereich:Seiten 3-10
Verlag:The American Ceramic Society
Status:veröffentlicht
Stichwörter:Catalytic convertor, NOx-reduction
Veranstaltungstitel:29th Int. Conference on Advance Materials and Coatings
Veranstaltungsort:Cocoa Beach, Orlanda, Florida
Veranstaltungsart:internationale Konferenz
Veranstaltungsbeginn:22 Januar 2005
Veranstaltungsende:27 Januar 2005
Veranstalter :The American Ceramic Society
HGF - Forschungsbereich:Energie
HGF - Programm:Rationelle Energieumwandlung (alt)
HGF - Programmthema:E VG - Verbrennungs- und Gasturbinentechnik (alt)
DLR - Schwerpunkt:Energie
DLR - Forschungsgebiet:E VG - Verbrennungs- und Gasturbinentechnik
DLR - Teilgebiet (Projekt, Vorhaben):E - Gasturbine (alt)
Standort: Köln-Porz
Institute & Einrichtungen:Institut für Werkstoff-Forschung > Hochtemperatur-und Funktionsschutzschichten
Hinterlegt von: Saruhan-Brings, Dr. Bilge
Hinterlegt am:24 Aug 2007
Letzte Änderung:24 Apr 2024 19:01

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