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@ARTICLE{Zenner:627899,
author = {Zenner, Johannes and Kang, Liqun and Antil, Neha and Johny,
Jacob and DeBeer, Serena and Leitner, Walter and Bordet,
Alexis},
title = {{B}imetallic {M}n$_x${R}u$_{100–x}$ {N}anoparticles on
{S}upported {I}onic {L}iquid {P}hases
({M}n$_x${R}u$_{100–x}$ @{SILP}) as {T}unable
{H}ydrogenation {C}atalysts},
journal = {ACS catalysis},
volume = {15},
number = {4},
issn = {2155-5435},
address = {Washington, DC},
publisher = {ACS},
reportid = {PUBDB-2025-01674},
pages = {3227 - 3235},
year = {2025},
abstract = {Bimetallic manganese–ruthenium nanoparticles of defined
Mn:Ru ratios were prepared on an imidazolium-based supported
ionic liquid phase. Characterization of the resulting
Mn$_x$Ru$_{100–x}$@SILP materials by electron microscopy
evidenced the formation of small (1.3–3.6 nm) and
well-dispersed nanoparticles (NPs) containing Mn and Ru in
the expected ratios. X-ray absorption spectroscopy (XAS)
studies revealed that no significant levels of alloying
occurred in these NPs that contain mainly oxidized Mn
species and metallic Ru, consistent with the immiscibility
of the two metals and the high oxophilicity of Mn. The
hydrogenation performance of Mn$_x$Ru$_{100–x}$@SILP
materials was probed using benzylideneacetone as model
substrate containing three distinct reducible moieties.
Albeit the two metals are present in distinct phases, the
Mn:Ru ratio was found to have a strong impact on activity
and selectivity with trends similar to what was previously
reported for alloyed Fe$_x$Ru$_{100–x}$@SILP and
Co$_x$Ru$_{100–x}$@SILP catalysts. In particular, a sharp
switch of 6-membered aromatic ring hydrogenation between
Mn$_{15}$Ru$_{85}$ (full ring hydrogenation) and
Mn$_{25}$Ru$_{75}$ (no ring hydrogenation) was observed.
These results demonstrate that alloying is not a requirement
to observe synergistic effects from the combination of 3d
metals and noble metals in NPs, opening new opportunities
for the development of bimetallic catalysts for selective
hydrogenation.},
cin = {FS DOOR-User},
ddc = {540},
cid = {$I:(DE-H253)FS_DOOR-User-20241023$},
pnm = {6G3 - PETRA III (DESY) (POF4-6G3) / DFG project
G:(GEPRIS)390919832 - EXC 2186: Das Fuel Science Center –
Adaptive Umwandlungssysteme für erneuerbare Energie- und
Kohlenstoffquellen (390919832) / FS-Proposal: I-20211319
(I-20211319) / FS-Proposal: I-20230324 (I-20230324)},
pid = {G:(DE-HGF)POF4-6G3 / G:(GEPRIS)390919832 /
G:(DE-H253)I-20211319 / G:(DE-H253)I-20230324},
experiment = {EXP:(DE-H253)P-P65-20150101},
typ = {PUB:(DE-HGF)16},
UT = {WOS:001416521200001},
doi = {10.1021/acscatal.4c05494},
url = {https://bib-pubdb1.desy.de/record/627899},
}