Formation of hydrogen peroxide and water from the reaction of cold hydrogen atoms with solid oxygen at 10 K

By N. Miyauchi, H. Hidaka, T. Chigai, Akihiro Nagaoka, N. Watanabe, A. Kouchi. 2008

155 citations recorded by the source corpus.

Abstract The reactions of cold H atoms with solid O 2 molecules were investigated at 10 K. The formation of H 2 O 2 and H 2 O has been confirmed by in situ infrared spectroscopy. We found that the reaction proceeds very efficiently and obtained the effective reaction rates. This is the first clear experimental evidence of the formation of water molecules under conditions mimicking those found in cold interstellar molecular clouds. Based on the experimental results, we discuss the reaction mechanism and astrophysical implications.

Subfields: Astronomy and Astrophysics, Atomic and Molecular Physics, and Optics, Spectroscopy

View Paper: https://www.semanticscholar.org/paper/f3daf7171fbb3df55c254350f43179500b3061c5

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Astronomy and Astrophysics

1. R. Garrod
2. P. Caselli
3. E. Herbst
4. E. Dishoeck
5. Cecilia Ceccarelli
6. V. Wakelam
7. K. Oberg
8. E. Bergin

In Atomic and Molecular Physics, and Optics

1. R. Garrod
2. V. Wakelam
3. P. Caselli
4. T. Pauly
5. E. Bergin
6. K. Oberg
7. S. Ioppolo
8. H. Linnartz

In Spectroscopy

1. R. Garrod
2. Cecilia Ceccarelli
3. P. Caselli
4. V. Wakelam
5. E. Herbst
6. E. Dishoeck
7. K. Oberg
8. E. Bergin

Citations in the corpus

• Our astrochemical heritage (2012, background): “Laboratory work shows that H2O can form via hydrogenation of atomic oxygen (Hiraoka et al. 1998; Dulieu et al. 2010; Jing et al. 2011), molecular oxygen (Ioppolo et al. 2008; Miyauchi et al. 2008), ozone (Mokrane et al. 2009; Romanzin et al. 2011) and via OH + H2 at 10 K (Oba et al. 2012).”
• ON THE FORMATION OF CO2 AND OTHER INTERSTELLAR ICES (2011, result): “This high efficiency is in line with experimental findings by Miyauchi et al. (2008), Ioppolo et al. (2008), and Oba et al. (2009) showing that O2 may be efficiently converted to water at low temperatures.”
• PHOTODESORPTION OF ICES. II. H2O AND D2O (2008, background): “In cold, quiescent clouds H2O forms through hydrogenation of O (O2 or O3) on cold (sub)micron-sized silicate grain surfaces forming icy layers (Tielens & Hagen 1982; Léger et al. 1985; Boogert & Ehrenfreund 2004; Miyauchi et al. 2008; Ioppolo et al. 2008).”
• Reaction Networks for Interstellar Chemical Modelling: Improvements and Challenges (2010, background): “The hydrogenation of solid O2 is the best studied channel (Miyauchi et al. 2008; Ioppolo et al. 2008; Oba et al. 2009).”
• Laboratory Evidence for Efficient Water Formation in Interstellar Ices (2008, methodology): “Like in the models by Awad et al. (2005) and Miyauchi et al. (2008), the rates 1 and 3 are the products between the rates of the reactions and the hydrogen surface abundance.”
• Hydrogenation reactions in interstellar CO ice analogues A combined experimental/theoretical approach (2009, background): “Recently the formation of water was demonstrated in hydrogenation schemes starting from solid molecular oxygen (Miyauchi et al. 2008; Ioppolo et al. 2008) and the formation of ethanol from acetaldehyde (Bisschop et al. 2007a).”
• Experimental evidence for water formation on interstellar dust grains by hydrogen and oxygen atoms (2009, background): “The formation of water molecules through the D+ O2 pathway has already been studied and confirmed experimentally by (Miyauchi et al. 2008; Ioppolo et al. 2008; Matar et al. 2008).”
• WATER, O2, AND ICE IN MOLECULAR CLOUDS (2008, background): “Miyauchi et al. (2008) discuss and review recent laboratory experiments that suggest rapid formation of water ice on grain surfaces.”
• The molecular composition of the planet-forming regions of protoplanetary disks across the luminosity regime (2015, background): “Recent laboratory experiments have shown that the hydrogenation of O2 ice is rapid at low temperatures (Ioppolo et al. 2008; Miyauchi et al. 2008).”