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@ARTICLE{Kwitsch:893911,
author = {Köwitsch, Nicolas and Thoni, Lukas and Klemmed, Benjamin
and Benad, Albrecht and Paciok, Paul and Heggen, Marc and
Eychmüller, Alexander and Armbrüster, Marc},
title = {{U}nprecedented {C}atalytic {A}ctivity and {S}electivity in
{M}ethanol {S}team {R}eforming by {R}eactive
{T}ransformation of {I}ntermetallic {I}n–{P}t {C}ompounds},
journal = {The journal of physical chemistry / C},
volume = {125},
number = {18},
issn = {1932-7455},
address = {Washington, DC},
publisher = {Soc.},
reportid = {FZJ-2021-02923},
pages = {9809 - 9817},
year = {2021},
abstract = {Hydrogen storage in the form of small molecules and
subsequent release are foreseen to play a fundamental role
in future energy systems or carbon cycles. Methanol is an
ideal hydrogen carrier due to the high H/C ratio, the lack
of C–C bonds, and being liquid under ambient conditions.
Methanol steam reforming is an advantageous reaction for the
release of the chemically bound hydrogen. Pd- or Pt-based
intermetallic compounds have shown to be CO2-selective and
long-term stable catalytic materials. However, an intrinsic
understanding of the underlying processes is still lacking.
In this study, we show that the redox activity in the
In–Pt system can be steered by gas-phase changes and leads
to highly active catalytic materials at 300 °C [1500 mol
(H2)/(mol (Pt) × h)] with an excellent CO2 selectivity of
$99.5\%,$ thus clearly outperforming previous materials.
Reactive transformations between In2Pt, In3Pt2, and In2O3
have been identified to cause the high selectivity. Redox
activity of intermetallic compounds as part of the catalytic
cycle was previously unknown and adds an understanding to
the concept of different adsorption sites.},
cin = {ER-C-1},
ddc = {530},
cid = {I:(DE-Juel1)ER-C-1-20170209},
pnm = {5351 - Platform for Correlative, In Situ and Operando
Characterization (POF4-535)},
pid = {G:(DE-HGF)POF4-5351},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000651787500021},
doi = {10.1021/acs.jpcc.1c02260},
url = {https://juser.fz-juelich.de/record/893911},
}