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@ARTICLE{Deibert:910144,
      author       = {Deibert, W. and Ivanova, M. E. and Ran, K. and Mayer, J.
                      and Meulenberg, W. A.},
      title        = {{U}p-scaling and processing related characterisation of
                      hydrogen permeation membranes based on pristine and {M}o
                      substituted {L}a28−x{W}4+x{O}54+1.5x},
      journal      = {Journal of the European Ceramic Society},
      volume       = {43},
      number       = {1},
      issn         = {0955-2219},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier Science},
      reportid     = {FZJ-2022-03633},
      pages        = {121-129},
      year         = {2023},
      abstract     = {Mixed protonic and electronic conducting ceramic membranes
                      offer a high potential to separate pure hydrogen from gas
                      mixtures or in the field of membrane reactors. The
                      water-gas-shift reaction is an example for the possible
                      application of lanthanum tungstate based materials with
                      general formula La28−xW4+xO54+1.5x (LaWO) due to their
                      high stability under the reaction conditions. To bring
                      ceramic membranes one step closer to commercialisation, high
                      effort is needed to find optimised material compositions and
                      transfer them into suitable fabrication techniques. Both is
                      done in the present work. First, a detailed XRD-study,
                      supported by microstructural analysis, was performed to find
                      a suitable composition for Mo-substituted LaWO. As it was
                      demonstrated, with increasing the Mo concentration as a
                      substitute for W leading to enhanced electronic
                      conductivity, the single phase region narrows and La/W ratio
                      shifts to the higher values. In order to ensure single phase
                      composition of the powder used in the membrane fabrication,
                      20 $mol.\%$ Mo substituted LWO was the material of choice.
                      Subsequently tape-casting was performed to produce
                      asymmetric membranes consisting of a thin functional
                      membrane made of LaWO-Mo20 and a porous support layer of
                      pure LaWO. Such asymmetric component could be scaled-up to
                      100 cm² active membrane area. The sintering behaviour was
                      characterised by optical dilatometry. The more
                      cost-efficient support material MgO was shown to be
                      incompatible with the LaWO-Mo20 material. Therefore, an
                      advanced fabrication route was developed by introducing an
                      intermediate layer to overcome interdiffusion and secondary
                      phase formation.},
      cin          = {IEK-1 / ER-C-2},
      ddc          = {660},
      cid          = {I:(DE-Juel1)IEK-1-20101013 / I:(DE-Juel1)ER-C-2-20170209},
      pnm          = {1232 - Power-based Fuels and Chemicals (POF4-123)},
      pid          = {G:(DE-HGF)POF4-1232},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000877589400004},
      doi          = {10.1016/j.jeurceramsoc.2022.09.033},
      url          = {https://juser.fz-juelich.de/record/910144},
}