Journal Article

FZJ-2021-00936

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Novel low-temperature lean NOx storage materials based on La0.5Sr0.5Fe1-xMxO3-δ/Al2O3 infiltration composites (M = Ti, Zr, Nb)

Ecker, S. (Corresponding author)FZJ* ; Dornseiffer, J.FZJ* ; Werner, J. ; Schlenz, H.FZJ* ; Sohn, Y. J.FZJ* ; Sauerwein, F. S.FZJ* ; Baumann, S.FZJ* ; Bouwmeester, H. J. M. ; Guillon, O.FZJ* ; Weirich, T. E. ; Meulenberg, W. A.FZJ*

2021
Elsevier Amsterdam

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Please use a persistent id in citations: http://hdl.handle.net/2128/27377  doi:10.1016/j.apcatb.2021.119919

Abstract: Low-temperature NOx storage materials for lean NOx traps based on nanocomposites containing perovskite-type oxides of La0.5Sr0.5Fe1-xMxO3-δ (M = Ti, Nb or Zr; x = 0.25 or 0.5) are prepared in a highly porous alumina with different loadings of 15−25 wt. %. The resulting storage materials are characterised by X-ray diffraction, BET and transmission electron microscopy with coupled ASTAR system for crystallite phase mapping. For all nanocomposites high surface areas around 100 m²/g are found. With perovskite loadings of 20 wt. % the platinised composites reveal NOx storage capacities between 120–164 μmol/g below 300 °C with a performance ranking of Zr > Ti > Nb. After hydrothermal ageing at 750 °C only for the Nb and Zr containing composites a decrease of the NSC up to 20 % can be observed. The NSC of the LSFT system can be improved by decreasing the perovskite loading to 15 wt. %.

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Contributing Institute(s):

1. Werkstoffsynthese und Herstellungsverfahren (IEK-1)
2. Nukleare Entsorgung und Reaktorsicherheit (IEK-6)
3. JARA-ENERGY (JARA-ENERGY)

Research Program(s):

1. 123 - Chemische Energieträger (POF4-123) (POF4-123)

Appears in the scientific report 2021

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Engineering, Computing and Technology ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; Essential Science Indicators ; IF >= 10 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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