Hydrogenation of CO on Pure Solid CO and CO-H2O Mixed Ice

Details Hydrogenation of CO on Pure Solid CO and CO-H2O Mixed Ice Hydrogenation of CO on Pure Solid CO and CO-H2O Mixed Ice

Nov 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004apj...616..638w&link_type=abstract

The Astrophysical Journal, Volume 616, Issue 1, pp. 638-642.

Astronomy and Astrophysics

Astronomy

59

Astrochemistry, Ism: Dust, Extinction, Ism: Molecules, Molecular Processes

Scientific paper

Using a cold (30 K) atomic hydrogen beam, hydrogenation of CO on pure solid CO and CO-H2O mixed ice is investigated at temperatures below 20 K. Hydrogenation proceeds efficiently on both pure solid CO and CO-H2O mixed ice below 12 K, but the rate of reaction on pure CO decreases significantly at 15 K compared to CO-H2O mixed ice. Hydrogenation of CO at 12 K and above is found to be promoted by H2CO and H2O molecules on the CO surface.

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