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@ARTICLE{Liu:865071,
      author       = {Liu, Yang and Motalov, Vladimir and Baumann, Stefan and
                      Sergeev, Dmitry and Müller, Michael and Sohn, Yoo Jung and
                      Guillon, Olivier},
      title        = {{T}hermochemical stability of {F}e- and {C}o-functionalized
                      perovskite-type {S}r{T}i{O}3 oxygen transport membrane
                      materials in syngas conditions},
      journal      = {Journal of the European Ceramic Society},
      volume       = {39},
      number       = {15},
      issn         = {0955-2219},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier Science},
      reportid     = {FZJ-2019-04633},
      pages        = {4874 - 4881},
      year         = {2019},
      abstract     = {The materials typically used for oxygen transport
                      membranes, Ba0.5Sr0.5Co0.8Fe0.2O3−δ (BSCF) and
                      La0.6Sr0.4Co0.2Fe0.8O3 (LSCF) tend to decompose due to their
                      low thermochemical stability under reducing atmosphere. Fe-
                      and Co-doped SrTiO3 (SrTi1-x-yCoxFeyO3-δ, x + y ≤
                      0.35) (STCF) materials showing an oxygen transport
                      comparable to LSCF have great potential for application in
                      ion-transport-devices. In this study, the thermochemical
                      stability of pure perovskite-structured STCF was
                      investigated after annealing in a syngas atmosphere at
                      600–900 °C. The phase composition of the materials
                      after annealing was characterized by means of X-ray
                      diffraction (XRD). The thermodynamic activities of SrO, FeO,
                      and CoO in the STCF materials were evaluated using Knudsen
                      effusion mass spectrometry (KEMS). Co-doped SrTiO3 (STC)
                      materials were not stable after annealing in the syngas
                      atmosphere above $5 mol\%$ Co-substitution.
                      Ruddlesden-Popper-like phases and SrCO3 were detected after
                      annealing at 600 °C. In contrast, Fe substitution (STF)
                      showed good stability after annealing in syngas upto
                      $35 mol\%$ substitution.},
      cin          = {IEK-1 / JARA-ENERGY / IEK-2},
      ddc          = {660},
      cid          = {I:(DE-Juel1)IEK-1-20101013 / $I:(DE-82)080011_20140620$ /
                      I:(DE-Juel1)IEK-2-20101013},
      pnm          = {113 - Methods and Concepts for Material Development
                      (POF3-113)},
      pid          = {G:(DE-HGF)POF3-113},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000487569500048},
      doi          = {10.1016/j.jeurceramsoc.2019.06.045},
      url          = {https://juser.fz-juelich.de/record/865071},
}