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@ARTICLE{GarciaFayos:841285,
      author       = {Garcia-Fayos, Julio and Balaguer, María and Baumann,
                      Stefan and Serra, José M.},
      title        = {{D}ual-phase membrane based on {L}a{C}o $_{0.2}$ {N}i
                      $_{0.4}$ {F}e $_{0.4}$ {O} $_{3−x}$ -{C}e $-{0.8}$ {G}d
                      $_{0.2}$ {O} $_{2−x}$ composition for oxygen permeation
                      under {CO} $_{2}$ /{SO} $_{2}$ -rich gas environments},
      journal      = {Journal of membrane science},
      volume       = {548},
      issn         = {0376-7388},
      address      = {New York, NY [u.a.]},
      publisher    = {Elsevier},
      reportid     = {FZJ-2017-08377},
      pages        = {117 - 124},
      year         = {2018},
      abstract     = {A dual-phase material with high ambipolar conductivity
                      composed by the perovskite LaCo0.2Ni0.4Fe0.4O3-δ (LCNF) as
                      the electronic phase and the fluorite Ce0.8Gd0.2O2-δ
                      (CGO20) as oxide-ion conductor is proposed for use as oxygen
                      transport membrane. The chemical compatibility between both
                      materials depends on the synthesis method, i.e. one-pot
                      sol-gel synthesis leads to the formation of the fluorite and
                      the perovskite phases, as well as a third NiO-based phase.
                      The formation of this last phase can be avoided by
                      previously stabilizing the phases separately. The composite
                      material shows high electrical conductivity, i.e., 7.25 S
                      cm−1 at 800 °C for LCNF-CGO20 with NiO impurity, and 2.6
                      S cm−1 at 800 °C for LCNF-CGO20. A maximum oxygen flux,
                      J(O2), of 0.74 ml min−1 cm−2 is obtained at 1000 °C for
                      a surface-activated membrane in Air/Ar gradient at ambient
                      pressure. The membranes were tested under i) $30\%$ CO2 in
                      Ar, and ii) 250 ppm of SO2 in $30\%$ CO2 in Ar, reproducing
                      oxyfuel-like conditions. Oxygen flux decreases in these
                      atmospheres, especially at temperatures below 900 °C, due
                      to competitive adsorption of these gases with the O2. After
                      CO2 and SO2 exposure, initial oxygen fluxes are recovered
                      when switching back to Ar sweeping at temperatures above 900
                      °C. Nevertheless, at temperatures < 900 °C the original
                      J(O2) before SO2 exposure is not fully recovered and
                      postmortem FESEM images reveal the membrane surface
                      degradation in SO2.},
      cin          = {IEK-1},
      ddc          = {570},
      cid          = {I:(DE-Juel1)IEK-1-20101013},
      pnm          = {113 - Methods and Concepts for Material Development
                      (POF3-113) / GREEN-CC - Graded Membranes for Energy
                      Efficient New Generation Carbon Capture Process (608524)},
      pid          = {G:(DE-HGF)POF3-113 / G:(EU-Grant)608524},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000419646500014},
      doi          = {10.1016/j.memsci.2017.11.006},
      url          = {https://juser.fz-juelich.de/record/841285},
}