Gas-phase reaction of mineral clusters related to chemistry in space

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  • 気相金属化合物クラスターの反応研究による 宇宙分子進化へのアプローチ
  • キソウ キンゾク カゴウブツ クラスター ノ ハンノウ ケンキュウ ニ ヨル ウチュウ ブンシ シンカ エ ノ アプローチ

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Abstract

We present the reaction of gas-phase free clusters with compositions similar to silica (SinOm－) and silicates (Mgl SiOm－)withH2OandCOmoleculestoinvestigatechemistryinspace.ItwasfoundthatadsorptionofH2OonMglSiOm－ isfollowedbymolecularoxygenrelease.ForSinOm－,H2Oadductwasobservedasamajorreactionproduct,whereH2O wasdissociativelyadsorbedonSinOm－ toformtwoSiO3(OH)tetrahedra.InthereactionofSinOm－ withCO,adsorption of CO was observed as a major reaction channel, which could be a first step in organic molecule formation. A pair of dangling O atoms in SinOm－ was the reaction site. The present findings give molecular-level insight into chemical evolution during the planetary formation process.

Journal

  • 低温科学

    低温科学 78 127-133, 2020-03-24

    低温科学第78巻編集委員会

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