| http://www.w3.org/ns/prov#value | - Metals such as In, Ti, Ag and Ru or alloys thereof are also effective, and their particle size can be appropriately selected depending on applications. (Hydrogen or Helium Storage Membrane) The hydrogen or helium permeation membrane used in the invention employs, as raw material, phenylheptamethylcyclotetrasiloxane and/or 2,6-cis-diphenylhexamethylcyclotetrasiloxane, and silicon resin.
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