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@ARTICLE{Schnebaum:893351,
author = {Schönebaum, Simon and Dornseiffer, Jürgen and Mauermann,
Peter and Wolkenar, Bernd and Sterlepper, Stefan and Wessel,
Egbert and Iskandar, Riza and Mayer, Joachim and Weirich,
Thomas E. and Pischinger, Stefan and Guillon, Olivier and
Simon, Ulrich},
title = {{C}omposition/{P}erformance {E}valuation of {L}ean {NO}x
{T}rap {C}atalysts for {C}oupling with {SCR} {T}echnology},
journal = {ChemCatChem},
volume = {13},
number = {7},
issn = {1867-3899},
address = {Weinheim},
publisher = {WILEY-VCH Verlag},
reportid = {FZJ-2021-02703},
pages = {1787 - 1805},
year = {2021},
abstract = {The washcoat composition and the catalytic properties of
two commercially available lean NOx traps (LNTs) were
investigated. Both catalysts contained nominally the same
NOx storage and catalytic materials but differed strongly in
their amount and activity as well as in the composition of
their layered washcoat architecture. In lean-rich cycle
experiments under realistic engine-out gas compositions
using a laboratory gas test bench, the LNTs showed
comparable NOx storage behavior. At temperatures below
250 °C, the lean phase durations last up to 300 s until
$50 \%$ of the NOx storage capacity is reached. The
simultaneously calculated NOx storage efficiencies drop
rapidly below $35 \%,$ resulting in a high NOx slip.
Strong variations were observed in N2O and NH3 selectivity
and in CO slip during regeneration of both LNTs caused by
the different oxygen storage capacity (OSC), water gas shift
(WGS) activity and rhodium distribution in the catalytic
layers. Based on the obtained results, proposals were made
to optimize the storage and regeneration performance,
leading to highly efficient LNT catalysts for coupling with
a downstream SCR catalyst.},
cin = {IEK-1 / IEK-2 / ER-C-2},
ddc = {540},
cid = {I:(DE-Juel1)IEK-1-20101013 / I:(DE-Juel1)IEK-2-20101013 /
I:(DE-Juel1)ER-C-2-20170209},
pnm = {1232 - Power-based Fuels and Chemicals (POF4-123)},
pid = {G:(DE-HGF)POF4-1232},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000617000400001},
doi = {10.1002/cctc.202001761},
url = {https://juser.fz-juelich.de/record/893351},
}