TY  - JOUR
AU  - Ecker, Sabrina
AU  - Dornseiffer, J.
AU  - Werner, Jonas
AU  - Schlenz, H.
AU  - Sohn, Y. J.
AU  - Sauerwein, F. S.
AU  - Baumann, S.
AU  - Bouwmeester, H. J. M.
AU  - Guillon, O.
AU  - Weirich, T. E.
AU  - Meulenberg, W. A.
TI  - Novel low-temperature lean NOx storage materials based on La0.5Sr0.5Fe1-xMxO3-δ/Al2O3 infiltration composites (M = Ti, Zr, Nb)
JO  - Applied catalysis / B
VL  - 286
SN  - 0926-3373
CY  - Amsterdam
PB  - Elsevier
M1  - FZJ-2021-00936
SP  - 119919 -
PY  - 2021
AB  - 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. %.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000621626700007
DO  - DOI:10.1016/j.apcatb.2021.119919
UR  - https://juser.fz-juelich.de/record/890409
ER  -