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@INPROCEEDINGS{SchulzeKppers:155396,
      author       = {Schulze-Küppers, Falk and Meulenberg, Wilhelm Albert and
                      Baumann, Stefan and Serra, Jose M. and Garcia-Fayos, Julio},
      title        = {{P}roperties and manufacturing of asymmetric
                      {L}a0.98-x{S}rx{C}o0.2{F}e0.8{O}3-d perovskite-type oxygen
                      separation membranes},
      reportid     = {FZJ-2014-04563},
      year         = {2014},
      abstract     = {One technology to meet the challenge of reducing
                      anthropogenic CO2 emissions is capturing CO2 in fossil
                      fuelled power plants and other combustion processes using
                      the Oxyfuel concept. Oxygen transport membranes (OTM)
                      exhibit high potential to supply the pure oxygen required by
                      most of these technologies. The oxygen transport in such
                      membranes is driven by an oxygen partial pressure gradient
                      across the membrane at temperatures and the practical
                      operation temperature lies in the range 800-900°C.
                      (La,Sr)(Co,Fe)O3-δ (LSCF) already discovered decades ago by
                      Teraoka attracted again increasing interest due to its good
                      compromise between performance and stability against flue
                      gas components and reducing atmosphere. In this work
                      sintering behavior, chemical and thermal expansion, and
                      specific permeability as well as stability towards CO2 of
                      La1-xSrxCo0.2Fe0.8O3- with different La/Sr ratio was
                      investigated to identify suitable compositions for
                      application.To maximize oxygen flux, the membrane should be
                      as thin as possible, which makes a porous support necessary.
                      In this work, thin (30 µm) supported membrane layers were
                      manufactured by sequential tape casting. Support porosity
                      was varied using different amounts of pore forming agent in
                      the tape cast slurry. Influence of support microstructure on
                      oxygen flux was investigated. Limitations by surface
                      exchange were overcome by applying a catalytic, porous layer
                      on top of the membrane surface by screen printing. The
                      effect of CO2 and O2 partial pressure on the O2 flux was
                      thoroughly analyzed as a function of temperature. Permeation
                      rates above 1 ml cm-2 min-1 at 800 – 850°C in an air/Ar
                      and air/CO2 gradient were achieved using
                      La0.6Sr0.4Co0.2Fe0.8O3-δ, which is close to the desired
                      value for oxyfuel power plants.},
      month         = {Aug},
      date          = {2014-08-17},
      organization  = {5th International Congress on
                       Ceramics, Beijing (China), 17 Aug 2014
                       - 21 Aug 2014},
      subtyp        = {After Call},
      cin          = {IEK-1},
      cid          = {I:(DE-Juel1)IEK-1-20101013},
      pnm          = {122 - Power Plants (POF2-122) / GREEN-CC - Graded Membranes
                      for Energy Efficient New Generation Carbon Capture Process
                      (608524)},
      pid          = {G:(DE-HGF)POF2-122 / G:(EU-Grant)608524},
      typ          = {PUB:(DE-HGF)6},
      url          = {https://juser.fz-juelich.de/record/155396},
}