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@ARTICLE{Ogel:426018,
      author       = {Ogel, E. and Casapu, M. and Doronkin, D. E. and Popescu, R.
                      and Störmer, H. and Mechler, C. and Marzun, G. and
                      Barcikowski, S. and Türk, M. and Grunwaldt, Jan-Dierk},
      title        = {{I}mpact of {P}reparation {M}ethod and {H}ydrothermal
                      {A}ging on {P}article {S}ize {D}istribution of
                      ${P}t/γ-{A}l_{2}{O}_{3}$ and {I}ts {P}erformance in {CO}
                      and {NO} {O}xidation},
      journal      = {The journal of physical chemistry / C C, Nanomaterials and
                      interfaces},
      volume       = {123},
      number       = {9},
      issn         = {1932-7455},
      address      = {Washington, DC},
      publisher    = {Soc.10927},
      reportid     = {PUBDB-2019-03552},
      pages        = {5433 - 5446},
      year         = {2019},
      note         = {© American Chemical Society},
      abstract     = {The influence of the preparation method and the
                      corresponding particle size distribution on hydrothermal
                      deactivation behavior at 600-800°C and its performance
                      during CO/NO oxida-tion was systematically investigated for
                      a series of Pt/Al2O3 catalysts. Representative conven-tional
                      (incipient wetness impregnation) and advanced preparation
                      methods (flame spray pyrol-ysis, supercritical fluid
                      reactive deposition and laser ablation in liquid) were
                      selected, which generated samples containing narrow and
                      homogeneous but also heterogeneous particle size
                      distributions. Basic characterization was conducted by
                      inductively coupled plasma-optical emission spectrometry, N2
                      physisorption and X-ray diffraction. The particle size
                      distribution and the corresponding oxidation state was
                      analyzed using transmission electron microscopy and X-ray
                      absorption spectroscopy. The systematic study shows that
                      oxidized Pt nanoparticles smaller than 2 nm sinter very
                      fast, already at 600°C, but potential chlorine traces from
                      the cat-alyst precursor seem to stabilize Pt nanoparticles
                      against further sintering and consequently maintain the
                      catalytic performance. Samples prepared by flame spray
                      pyrolysis and laser abla-tion showed a superior hydrothermal
                      resistance of the alumina support, although, due to small
                      inter-particle distance in case of laser synthesized
                      particles, the particle size distribution in-creases
                      considerably at high temperatures. Significant deceleration
                      of the noble metal sintering process was obtained for the
                      catalysts containing homogeneously distributed but slightly
                      larg-er Pt nanoparticles (supercritical fluid reactive
                      deposition) or for particles deposited on a ther-mally
                      stable alumina support (flame spray pyrolysis). The
                      correlations obtained between Pt particle size distribution,
                      oxidation state and catalytic performance indicate different
                      trends for CO and NO oxidation reactions, in line with
                      structure sensitivity.},
      cin          = {DOOR},
      ddc          = {530},
      cid          = {I:(DE-H253)HAS-User-20120731},
      pnm          = {6G3 - PETRA III (POF3-622)},
      pid          = {G:(DE-HGF)POF3-6G3},
      experiment   = {EXP:(DE-H253)P-P64-20150101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000460996000031},
      doi          = {10.1021/acs.jpcc.8b11065},
      url          = {https://bib-pubdb1.desy.de/record/426018},
}