Hydrogen Clusters in Clathrate Hydrate

DOI Web Site 被引用文献53件
  • Wendy L. Mao
    Department of the Geophysical Sciences, University of Chicago, Chicago, IL 60637, USA.
  • Ho-kwang Mao
    Geophysical Laboratory, Carnegie Institution of Washington, Washington, DC 20015, USA.
  • Alexander F. Goncharov
    Geophysical Laboratory, Carnegie Institution of Washington, Washington, DC 20015, USA.
  • Viktor V. Struzhkin
    Geophysical Laboratory, Carnegie Institution of Washington, Washington, DC 20015, USA.
  • Quanzhong Guo
    Geophysical Laboratory, Carnegie Institution of Washington, Washington, DC 20015, USA.
  • Jingzhu Hu
    Geophysical Laboratory, Carnegie Institution of Washington, Washington, DC 20015, USA.
  • Jinfu Shu
    Geophysical Laboratory, Carnegie Institution of Washington, Washington, DC 20015, USA.
  • Russell J. Hemley
    Geophysical Laboratory, Carnegie Institution of Washington, Washington, DC 20015, USA.
  • Maddury Somayazulu
    High Pressure Collaborative Access Team, Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439, USA.
  • Yusheng Zhao
    Los Alamos Neutron Science Center (LANSCE), Los Alamos National Laboratory, Los Alamos, NM 87545, USA.

書誌事項

公開日
2002-09-27
DOI
  • 10.1126/science.1075394
公開者
American Association for the Advancement of Science (AAAS)

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説明

<jats:p> High-pressure Raman, infrared, x-ray, and neutron studies show that H <jats:sub>2</jats:sub> and H <jats:sub>2</jats:sub> O mixtures crystallize into the sII clathrate structure with an approximate H <jats:sub>2</jats:sub> /H <jats:sub>2</jats:sub> O molar ratio of 1:2. The clathrate cages are multiply occupied, with a cluster of two H <jats:sub>2</jats:sub> molecules in the small cage and four in the large cage. Substantial softening and splitting of hydrogen vibrons indicate increased intermolecular interactions. The quenched clathrate is stable up to 145 kelvin at ambient pressure. Retention of hydrogen at such high temperatures could help its condensation in planetary nebulae and may play a key role in the evolution of icy bodies. </jats:p>

収録刊行物

  • Science

    Science 297 (5590), 2247-2249, 2002-09-27

    American Association for the Advancement of Science (AAAS)

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