Amorphous ice, a microporous solid - Astrophysical implications

Details Amorphous ice, a microporous solid - Astrophysical implications Amorphous ice, a microporous solid - Astrophysical implications

Mar 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987jphys..48....1m&link_type=abstract

(Symposium on the Physics and Chemistry of Ice, 7th, Grenoble, France, Sept. 1-5, 1986) Journal de Physique (Colloque C1), Suppl

Physics

22

Amorphous Materials, Ice, Interstellar Matter, Microporosity, Cryogenic Temperature, Recombination Reactions, Vapor Deposition

Scientific paper

Vapor deposited amorphous ice, investigated by N2-adsorption at 77 K, was found to be a microporous solid. Micropore volumes between 0.21 and 0.12 cu cm/g were determined by comparison plots and Dubinin-Redushkevich (1947) plots. Warming of the adsorbent to 113 K caused sintering and reduction of apparent surface area by about an order of magnitude; in the presence of adsorbed gas, large amounts of gas were enclosed in the solid. The influence of micropores on the H2 recombination rate on amorphous ice in interstellar dust and on adsorption of volatile gases in comets is discussed briefly.

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