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@ARTICLE{Schmolke:873295,
      author       = {Schmolke, Laura and Gregori, Bernhard J. and Giesen,
                      Beatriz and Schmitz, Alexa and Barthel, Juri and Staiger,
                      Lena and Fischer, Roland A. and Jacobi von Wangelin, Axel
                      and Janiak, Christoph},
      title        = {{B}imetallic {C}o/{A}l nanoparticles in an ionic liquid:
                      synthesis and application in alkyne hydrogenation},
      journal      = {New journal of chemistry},
      volume       = {43},
      number       = {42},
      issn         = {1369-9261},
      address      = {London},
      publisher    = {RSC},
      reportid     = {FZJ-2020-00613},
      pages        = {16583 - 16594},
      year         = {2019},
      abstract     = {Herein, we report the microwave-induced decomposition of
                      various organometallic cobalt and aluminum precursors in an
                      ionic liquid (IL), 1-butyl-3-methylimidazolium
                      bis(trifluoromethylsulfonyl)imide ([BMIm]NTf2), resulting in
                      Co/Al nanoalloys with different molar Co/Al ratios. The
                      dual-source precursor system of dicobalt octacarbonyl
                      (Co2(CO)8) and pentamethylcyclopentadienyl aluminum
                      ([AlCp*]4) in [BMIm]NTf2 afforded CoAl nanoparticles
                      (CoAl-NPs) with a molar Co/Al ratio of 1 : 1. Their size
                      and size distribution were determined via transmission
                      electron microscopy (TEM) to be an average diameter of 3.0
                      ± 0.5 nm. Furthermore, the dual-source precursor system of
                      cobalt amidinate ([Co(iPr2-MeAMD)2]) and aluminum amidinate
                      [Me2Al(iPr2-MeAMD)] in molar ratios of 1 : 1 and
                      3 : 1 resulted in CoAl- and Co3Al-NPs with an average
                      diameter of 3 ± 1 and 2.0 ± 0.2 nm, respectively. All the
                      obtained materials were characterized via TEM, energy
                      dispersive X-ray spectroscopy (EDX), selected area electron
                      diffraction (SAED), together with high-angle annular
                      dark-field scanning transmission electron microscopy
                      (HAADF-STEM) and (high-resolution) X-ray photoelectron
                      spectroscopy ((HR-)XPS). Phase-pure Co/Al-NPs were not
                      obtained since the concomitant formation of Co-NPs and Al2O3
                      occurred in this wet-chemical synthesis. The as-prepared
                      Co/Al nanoalloys were evaluated as catalysts in the
                      hydrogenation of phenylacetylene under mild conditions (2
                      bar H2, 30 °C in THF). In comparison to the monometallic
                      Co-NPs, the Co/Al-NPs showed a significantly higher
                      catalytic hydrogenation activity. The Co- and Co/Al-NPs were
                      also active under harsher reaction conditions (80 bar H2, 80
                      °C) without the addition of the activating co-catalyst
                      DIBAL-H.},
      cin          = {ER-C-2},
      ddc          = {540},
      cid          = {I:(DE-Juel1)ER-C-2-20170209},
      pnm          = {131 - Electrochemical Storage (POF3-131)},
      pid          = {G:(DE-HGF)POF3-131},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000493080000018},
      doi          = {10.1039/C9NJ03622A},
      url          = {https://juser.fz-juelich.de/record/873295},
}