Efficient Formation of Formaldehyde and Methanol by the Addition of Hydrogen Atoms to CO in H2O-CO Ice at 10 K

By N. Watanabe, A. Kouchi. 2002

450 citations recorded by the source corpus.

Subfields: Atmospheric Science, Atomic and Molecular Physics, and Optics

View Paper: https://www.semanticscholar.org/paper/1e8cec96e83236283c879ef89b07a9abc4a73b0e

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Citations in the corpus

Molecular Evolution and Star Formation: From Prestellar Cores to Protostellar Cores (2007, background): “For example, Watanabe & Kouchi (2002b) and Watanabe et al. (2007) found that carbon dioxide is efficiently produced by UV irradiation on a binary ice mixture of H2O and CO, a result that is consistent with our model.”
Observations of the Icy Universe (2015, background): “Very briefly, this “bottom up” approach has been successful in creating H2CO and CH3OH (Watanabe & Kouchi, 2002), CO2 (Ioppolo et al., 2011) and other species on cold surfaces with quantitative results.”
Experimental evidence for glycolaldehyde and ethylene glycol formation by surface hydrogenation of CO molecules under dense molecular cloud conditions (2015, background): “The reduction reactions (1), (5)–(8) (or similar reactions) are reported to proceed under cold molecular cloud conditions (Hiraoka et al. 1994; Watanabe & Kouchi 2002; Zhitnikov & Dmitriev 2002; Bisschop et al. 2007; Fuchs et al. 2009).”
Interstellar Ice: The Infrared Space Observatory Legacy (2004, result): “CH3OH), but laboratory experiments to confirm this formation route give discrepant results (Hiraoka et al. 2002; Watanabe & Kouchi 2002).”
Our astrochemical heritage (2012, background): “[452]; [208]; [300]; [219]; [161]; [136]).”
The photodissociation and chemistry of CO isotopologues: applications to interstellar clouds and circumstellar disks (2009, background): “CO ice on the surfaces of grains can be hydrogenated to more complex saturated molecules such as CH3OH (e.g., Charnley et al. 1995; Watanabe & Kouchi 2002), so the partioning of CO between the gas and grains is important for the overall chemical composition as well (e.g., Caselli et al. 1993;…”
Non-thermal desorption from interstellar dust grains via exothermic surface reactions (2007, background): “Experimental work by Watanabe & Kouchi (2002) and Hidaka et al. (2004) has demonstrated that this process is efficient on ice surfaces at such low temperatures, in spite of activation energies on the order of 1000 K for the reactions H+ CO→ HCO and H+ H2CO→ CH3O/CH2OH.”
Microscopic simulation of methanol and formaldehyde ice formation in cold dense cores (2009, methodology): “Following Tielens & Hagen (1982) and Charnley et al. (1992) and supported by numerous laboratory studies on hydrogenation of CO (Fuchs et al. 2009; Hiraoka et al. 2002; Watanabe & Kouchi 2002), we assume that methanol and formaldehyde are formed from hydrogenation of CO on grain surfaces.”
REACTIVE DESORPTION AND RADIATIVE ASSOCIATION AS POSSIBLE DRIVERS OF COMPLEX MOLECULE FORMATION IN THE COLD INTERSTELLAR MEDIUM (2013, background): “Of the complex species, only the production of methanol is well understood; it is formed via non-thermal desorption following the successive hydrogenation by atomic hydrogen on ice mantles of CO that is accreted from the gas (Watanabe & Kouchi 2002).”
The Gas-Phase Formation of Methyl Formate in Hot Molecular Cores (2004, background): “Among the injected species are formaldehyde and methanol, for which grain-surface syntheses from CO have some basis in laboratory studies (Hiraoka et al. 2000; Watanabe & Kouchi 2002).”
Grain Surface Models and Data for Astrochemistry (2017, background): “…on C-H sites cOn both C-H and N-H sites, but likely via a different mechanism dSee also additional comments in the Faraday Discussions eProposed mechanism A—Hiraoka et al. (2002), Watanabe and Kouchi (2002), Hidaka et al. (2007); B—Watanabe and Kouchi (2002), Fuchs et al. (2009), Hidaka et al.…”
Reaction Networks for Interstellar Chemical Modelling: Improvements and Challenges (2010, methodology): “(32) Laboratory data have become available confirming this sequence of reactions in several laboratories using RAIRS as the main analytical technique (Watanabe and Kouchi 2002; Fuchs et al. 2009).”
The chemical history of molecules in circumstellar disks - I. Ices (2009, background): “CO is an important precursor for more complex molecules; for example, solid CO can be hydrogenated to formaldehyde (H2CO) and methanol (CH3OH) at low temperatures (Watanabe & Kouchi 2002; Fuchs et al. subm.).”
Simulation of the Formation and Morphology of Ice Mantles on Interstellar Grains (2007, background): “There is experimental and/or theoretical evidence that these reactions do indeed occur on cold surfaces (Kroes & Andersson 2006; Hiraoka et al. 1994; Tielens & Hagen 1982; Watanabe & Kouchi 2002).”
H-atom addition and abstraction reactions in mixed CO, H2CO and CH3OH ices – an extended view on complex organic molecule formation (2016, methodology): “This is due to the higher reactivity of these intermediates to H-atoms via barrierless reactions compared to the stable species that have to bypass activation barriers (Watanabe & Kouchi 2002; Fuchs et al. 2009).”
Hydrogenation reactions in interstellar CO ice analogues A combined experimental/theoretical approach (2009, methodology): “(1) Laboratory studies of H-atom bombardment of CO ice were performed independently by two groups (Hiraoka et al. 2002; Watanabe & Kouchi 2002).”