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@INPROCEEDINGS{Tanaka:1038865,
      author       = {Tanaka, H. and Reinecke, Ernst-Arndt and Chaumeix, N. and
                      Bentaib, A. and Taniguchi, M. and Matsumura, D. and Jinjo,
                      I. and Nakayama, T. and Uegaki, S. and Aotani, T. and Kita,
                      T.},
      title        = {{E}xperimental verification to developing safety technology
                      for liquefied hydrogen: {P}roject "{STACY}"},
      reportid     = {FZJ-2025-01681},
      year         = {2024},
      abstract     = {Global efforts are underway to decarbonize the energy
                      sector. Liquefied (cryogenic) hydrogen (LH2) has highstorage
                      density, making it excellent for large-scale storage and
                      transportation, and is expected to play a fundamentalrole in
                      the hydrogen economy. However, liquid hydrogen has several
                      properties that are potential safety risks.An international
                      collaboration between Germany, France, and Japan is underway
                      in the project "Towards the SafeStorage and Transport of
                      Cryogenic Hydrogen" (acronym "STACY"). Project activities
                      are allocated to five workpackages to achieve specific
                      goals. This paper reports on the development of hydrogen
                      safety technology using acatalyst (WP3).This technology is
                      called "Passive Autocatalytic Recombiner: PAR" because it
                      works autonomously withoutexternal heating, blowing, or
                      stirring. Liquid hydrogen has the characteristics of
                      extremely low temperature andhigh energy density, and in the
                      event of a leak, it will expand highly. To achieve the PAR
                      required for these safetymeasures, the crystal structure of
                      the catalyst was designed from the atomic level, and an
                      actual catalyst wasprototyped, and repeated tests were
                      carried out in a large reaction vessel as well as laboratory
                      evaluations.As a countermeasure against the unlikely event
                      of a liquefied hydrogen leakage, progress is being made in
                      thedevelopment of catalysts that can oxidize hydrogen even
                      in extremely low temperatures, high expansion, and
                      low-oxygen environments, are resistant to catalyst poisons,
                      and can prevent spontaneous ignition due to heat
                      generation.The catalyst technology uses not only general
                      alumina supports, but also ceria and perovskite-type oxides
                      to controlthe surface state of precious metals, suppressing
                      hydrogen ignition through multi-stage configuration and
                      showingresistance to contamination from oxygen and carbon
                      monoxide. Furthermore, the mechanism of catalyst
                      poisonresistance was elucidated using synchrotron radiation},
      month         = {Jun},
      date          = {2024-06-23},
      organization  = {WHEC2024, Cancun (Mexico), 23 Jun 2024
                       - 27 Jun 2024},
      cin          = {IET-4},
      cid          = {I:(DE-Juel1)IET-4-20191129},
      pnm          = {1422 - Beyond Design Basis Accidents and Emergency
                      Management (POF4-142)},
      pid          = {G:(DE-HGF)POF4-1422},
      typ          = {PUB:(DE-HGF)1},
      url          = {https://juser.fz-juelich.de/record/1038865},
}