%0 Journal Article
%A Ecker, Sabrina
%A Dornseiffer, J.
%A Werner, Jonas
%A Schlenz, H.
%A Sohn, Y. J.
%A Sauerwein, F. S.
%A Baumann, S.
%A Bouwmeester, H. J. M.
%A Guillon, O.
%A Weirich, T. E.
%A Meulenberg, W. A.
%T Novel low-temperature lean NOx storage materials based on La0.5Sr0.5Fe1-xMxO3-δ/Al2O3 infiltration composites (M = Ti, Zr, Nb)
%J Applied catalysis / B
%V 286
%@ 0926-3373
%C Amsterdam
%I Elsevier
%M FZJ-2021-00936
%P 119919 -
%D 2021
%X 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. %.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000621626700007
%R 10.1016/j.apcatb.2021.119919
%U https://juser.fz-juelich.de/record/890409