FORMATION OF CARBONIC ACID (H2CO3) BY SURFACE REACTIONS OF NON-ENERGETIC OH RADICALS WITH CO MOLECULES AT LOW TEMPERATURES
We present the experimental results of carbonic acid (H2CO3) formation through surface reactions of CO molecules with non-energetic hydroxyl (OH) radicals at 10-40 K. The formation of H2CO3 was clearly identified both in the IR spectra and in the thermally programmed desorption mass spectra. The H2C...
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ftopenaccessrep:oai:zenodo.org:99399 2023-10-25T01:37:35+02:00 FORMATION OF CARBONIC ACID (H2CO3) BY SURFACE REACTIONS OF NON-ENERGETIC OH RADICALS WITH CO MOLECULES AT LOW TEMPERATURES Naoki Watanabe Valerio Pirronello Yasuhiro Oba Akira Kouchi Tetsuya Hama 2010-10-01 https://www.openaccessrepository.it/record/99399 https://doi.org/10.1088/0004-637x/722/2/1598 und unknown url:https://www.openaccessrepository.it/communities/itmirror https://www.openaccessrepository.it/record/99399 doi:10.1088/0004-637x/722/2/1598 info:eu-repo/semantics/openAccess Space and Planetary Science Astronomy and Astrophysics info:eu-repo/semantics/article publication-article 2010 ftopenaccessrep https://doi.org/10.1088/0004-637x/722/2/1598 2023-09-26T22:17:28Z We present the experimental results of carbonic acid (H2CO3) formation through surface reactions of CO molecules with non-energetic hydroxyl (OH) radicals at 10-40 K. The formation of H2CO3 was clearly identified both in the IR spectra and in the thermally programmed desorption mass spectra. The H2CO3 yield was rather high, amounting to approximately 40%-70% relative to that of CO2 formed by the reaction of CO with OH. The structure of H2CO3 formed by reactions of CO with OH may differ from that formed by energetic processes such as UV irradiation, ion irradiation, and electron irradiation of H2O/CO2 binary ices. In this paper, we envisage some of the possible roles H2CO3 may have in the interstellar medium, such as enriching grain mantles of new molecules via acid-base reactions with basic species and contributing to the formation of the unidentified band at 6.8 μm; we suggest possible reasons for its non-detection yet and discuss the restoration of carbonic acid molecules in the gas phase. Article in Journal/Newspaper Carbonic acid Istituto Nazionale di Fisica Nucleare (INFN): Open Access Repository The Astrophysical Journal 722 2 1598 1606 |
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Istituto Nazionale di Fisica Nucleare (INFN): Open Access Repository |
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Space and Planetary Science Astronomy and Astrophysics |
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Space and Planetary Science Astronomy and Astrophysics Naoki Watanabe Valerio Pirronello Yasuhiro Oba Akira Kouchi Tetsuya Hama FORMATION OF CARBONIC ACID (H2CO3) BY SURFACE REACTIONS OF NON-ENERGETIC OH RADICALS WITH CO MOLECULES AT LOW TEMPERATURES |
topic_facet |
Space and Planetary Science Astronomy and Astrophysics |
description |
We present the experimental results of carbonic acid (H2CO3) formation through surface reactions of CO molecules with non-energetic hydroxyl (OH) radicals at 10-40 K. The formation of H2CO3 was clearly identified both in the IR spectra and in the thermally programmed desorption mass spectra. The H2CO3 yield was rather high, amounting to approximately 40%-70% relative to that of CO2 formed by the reaction of CO with OH. The structure of H2CO3 formed by reactions of CO with OH may differ from that formed by energetic processes such as UV irradiation, ion irradiation, and electron irradiation of H2O/CO2 binary ices. In this paper, we envisage some of the possible roles H2CO3 may have in the interstellar medium, such as enriching grain mantles of new molecules via acid-base reactions with basic species and contributing to the formation of the unidentified band at 6.8 μm; we suggest possible reasons for its non-detection yet and discuss the restoration of carbonic acid molecules in the gas phase. |
format |
Article in Journal/Newspaper |
author |
Naoki Watanabe Valerio Pirronello Yasuhiro Oba Akira Kouchi Tetsuya Hama |
author_facet |
Naoki Watanabe Valerio Pirronello Yasuhiro Oba Akira Kouchi Tetsuya Hama |
author_sort |
Naoki Watanabe |
title |
FORMATION OF CARBONIC ACID (H2CO3) BY SURFACE REACTIONS OF NON-ENERGETIC OH RADICALS WITH CO MOLECULES AT LOW TEMPERATURES |
title_short |
FORMATION OF CARBONIC ACID (H2CO3) BY SURFACE REACTIONS OF NON-ENERGETIC OH RADICALS WITH CO MOLECULES AT LOW TEMPERATURES |
title_full |
FORMATION OF CARBONIC ACID (H2CO3) BY SURFACE REACTIONS OF NON-ENERGETIC OH RADICALS WITH CO MOLECULES AT LOW TEMPERATURES |
title_fullStr |
FORMATION OF CARBONIC ACID (H2CO3) BY SURFACE REACTIONS OF NON-ENERGETIC OH RADICALS WITH CO MOLECULES AT LOW TEMPERATURES |
title_full_unstemmed |
FORMATION OF CARBONIC ACID (H2CO3) BY SURFACE REACTIONS OF NON-ENERGETIC OH RADICALS WITH CO MOLECULES AT LOW TEMPERATURES |
title_sort |
formation of carbonic acid (h2co3) by surface reactions of non-energetic oh radicals with co molecules at low temperatures |
publishDate |
2010 |
url |
https://www.openaccessrepository.it/record/99399 https://doi.org/10.1088/0004-637x/722/2/1598 |
genre |
Carbonic acid |
genre_facet |
Carbonic acid |
op_relation |
url:https://www.openaccessrepository.it/communities/itmirror https://www.openaccessrepository.it/record/99399 doi:10.1088/0004-637x/722/2/1598 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1088/0004-637x/722/2/1598 |
container_title |
The Astrophysical Journal |
container_volume |
722 |
container_issue |
2 |
container_start_page |
1598 |
op_container_end_page |
1606 |
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1780732548643553280 |