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Adsorption of methane on laboratory-made crushed ice and on natural snow at 77 K. Atmospheric implications.

Author(s) : CHAIX L., OCAMPO J., DOMINE F.

Type of article: Article

Summary

Methane adsorption on crushed ice, annealed crushed ice, and natural snow was measured at 77 K. For surface coverages of 0.01 to 0.00001 monolayer, unannealed crushed ice and snow adsorbed methane similarly, while annealed crushed ice adsorbed 2 to 3 times less methane. This difference can be due to different densities of surface defects such as dangling oxygen hydrogen bonds, a small fraction of crystallographic faces with high Miller-Bravais indices, or microcracks. From these observations, the authors conclude that further studies of the surface of ice made using different methods are needed before laboratory adsorption data can be applied to the atmosphere.

Details

  • Original title: Adsorption of methane on laboratory-made crushed ice and on natural snow at 77 K. Atmospheric implications.
  • Record ID : 1997-0006
  • Languages: English
  • Source: C. R. Acad. Sci., Sér. II, A - vol. 322 - n. 8
  • Publication date: 1996/04/18
  • Document available for consultation in the library of the IIR headquarters only.

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