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@INPROCEEDINGS{Wolter:1028743,
      author       = {Wolter, Julia Lucia and Deibert, Wendelin and Meulenberg,
                      Wilhelm Albert and Gross-Barsnick, Sonja-Michaela and Weber,
                      Sebastian and Pelka, Axel and Nikolay, Dieter and Semmler,
                      Pierre and Schunk, Stephan and Ingale, Piyush},
      title        = {{F}abrication and {J}oining of {P}roton {C}onducting {C}ell
                      {A}ssemblies for {D}ehydrogenation of {A}lkanes},
      reportid     = {FZJ-2024-04791},
      year         = {2024},
      abstract     = {Satisfying the ever-increasing global demand for energy and
                      material goods while achieving the ambitious CO2 emissions
                      targets of the EU for 2030 on climate change requires the
                      utilization of renewable resources (e.g., wind, solar) in
                      the fuels and chemical industries. The project AMAZING
                      (Additive Manufacturing for Zero-emission Innovative Green
                      Chemistry) directly addresses this by replacing large-scale
                      high-temperature cracking processes (e.g., steam cracking)
                      with electrically driven thermo-catalytic activation of
                      alkanes to produce chemical building blocks allowing
                      significant reduction in the CO2 emissions associated with
                      energy-intensive cracking reactions. The core of the cell
                      assembly is a ceramic membrane made from mixed proton and
                      electron conducting La6-xWO12-δ. To increase the electronic
                      conductivity of the material Mo as doping element is used to
                      form La6-xW0.8Mo0.2O12-δ (LWO-Mo20). The powder is in-house
                      produced and the particle size, specific surface area and
                      chemical composition is determined before the ceramic layers
                      are formed. Therefore, three different fabrication
                      techniques are used in this work. The first one is
                      sequential tape-casting and lamination to fabricate an
                      asymmetric structure of a dense membrane layer (thickness
                      ≈ 25 µm) and a porous support (thickness ≈ 500 µm).
                      Furthermore 3D-printing techniques are implemented to
                      achieve defined support structures. Firstly, a combination
                      of tape casting and material extrusion (MEX) is introduced,
                      where the support structure is printed directly on a
                      tape-cast membrane layer. This technique allows a good
                      membrane quality but suffers during the co-firing of the
                      final layers. Secondly, a pure 3D-printing approach is
                      introduced, which utilizes 3D-screen printing. With this
                      technique both, membrane and support layer, are formed
                      subsequently in one machine allowing good membrane quality
                      and precise support structures.After co-firing all membrane
                      components undergo a quality testing procedure, which
                      includes He-leakage determination and white-light
                      topography. The next step is the joining of the ceramic
                      membrane into a metal frame to form a membrane module, which
                      can easily be built in a test reactor and quickly exchanged
                      for multiple tests. The joining procedure takes place in a
                      furnace at 850 °C applying load on the sealing area. Glass
                      sealant is used to connect the ceramic and metal part. After
                      joining, another He-leakage test is performed to assure the
                      joining quality. With this procedure large amounts of
                      lab-scale membrane modules can be fabricated for further
                      performance tests.AcknowledgmentThe authors thank the
                      Federal Ministry for Economic Affairs and Climate Action in
                      Germany for funding this project (Funding Code: 03EN2052A).},
      month         = {Jul},
      date          = {2024-07-01},
      organization  = {17th International Conference On
                       Inorganic Membranes, Floraniapolis
                       (Brazil), 1 Jul 2024 - 5 Jul 2024},
      subtyp        = {After Call},
      cin          = {IMD-2},
      cid          = {I:(DE-Juel1)IMD-2-20101013},
      pnm          = {1232 - Power-based Fuels and Chemicals (POF4-123) /
                      Verbundvorhaben: AMAZING - Additive Manufacturing for
                      Zero-emission Innovative Green Chemistry Teilvorhaben:
                      Entwicklung von Gastrennmembranen (03EN2052A)},
      pid          = {G:(DE-HGF)POF4-1232 / G:(BMWi)03EN2052A},
      typ          = {PUB:(DE-HGF)6},
      url          = {https://juser.fz-juelich.de/record/1028743},
}