Formation of Formaldehyde by the Tunneling Reaction of H with Solid CO at 10 K Revisited

Details Formation of Formaldehyde by the Tunneling Reaction of H with Solid CO at 10 K Revisited Formation of Formaldehyde by the Tunneling Reaction of H with Solid CO at 10 K Revisited

Sep 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002apj...577..265h&link_type=abstract

The Astrophysical Journal, Volume 577, Issue 1, pp. 265-270.

Astronomy and Astrophysics

Astronomy

43

Astrochemistry, Ism: Molecules, Methods: Laboratory, Molecular Processes

Scientific paper

The reaction of H atoms with the solid CO thin film was reinvestigated in the temperature region of 10-25 K. H2CO was found to be only the reaction product, and no other products such as CH3OH were detected. This indicates that the tunneling reactions of H with H2CO to form CH3OH are even slower than the slow reaction of H with CO to form H2CO. The CH3OH found in the envelopes of the dark clouds may have other sources for their production in addition to reactions 2H+H2CO-->CH3OH, e.g., reaction of O(1D) with CH4 trapped on the dust grains to form CH3OH. The yield of H2CO from the reaction H with solid CO showed a steep increase with a decrease of temperature from 25 to 10 K. This indicates that the dark clouds whose temperature is kept at as low as 10 K are the favorable place for the chemical evolution via tunneling reactions. The erosion of the solid CO film was not observed with the spray of the H atoms over the CO solid film in the temperature range of 10-25 K. This finding suggests that the contribution of the highly exothermic reaction 2H+H2 to desorption of the grain mantle may not be as large as thought before.

Affiliated with

Also associated with

No associations

Rating

Formation of Formaldehyde by the Tunneling Reaction of H with Solid CO at 10 K Revisited does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Formation of Formaldehyde by the Tunneling Reaction of H with Solid CO at 10 K Revisited, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Formation of Formaldehyde by the Tunneling Reaction of H with Solid CO at 10 K Revisited will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1311830