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Solid state chemistry of nitrogen oxides – Part I: surface consumption of NO

Minissale, M. and Fedoseev, G. and Congiu, E. and Ioppolo, S. and Dulieu, F. and Linnartz, H. (2014) Solid state chemistry of nitrogen oxides – Part I: surface consumption of NO. Physical Chemistry Chemical Physics, 16 . pp. 8257-8269. ISSN 1463-9076.

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The role of nitrogen and oxygen chemistry in the interstellar medium is still rather poorly understood. Nitric oxide, NO, has been proposed as an important precursor in the formation of larger N- and O-bearing species, such as hydroxylamine, NH_(2)OH, and nitrogen oxides, NO_2 and N_(2)O. The topic of this study is the solid state consumption of NO via oxygenation and the formation of NO_2 and other nitrogen oxides (ONNO_2 and N_(2)O_4) under conditions close to those encountered on icy grains in quiescent interstellar clouds. In our experiments nitric oxide and oxygen allotropes (O, O_2, and O_3) or N atoms are co-deposited under ultra-high vacuum conditions on different substrates (silicate, graphite, compact ASW ice, and gold) at temperatures ranging between 10 and 35 K. Reaction products are monitored via Fourier Transform Reflection Absorption Infrared Spectroscopy (FT-RAIRS) and Temperature Programmed Desorption (TPD) using mass spectrometry. We find that NO_2 is efficiently formed in NO + O/O_(2)/O_(3)/N solid surface reactions. These are essentially barrier free and offer a pathway for the formation of NO_2 in space. Nitrogen dioxide, however, has not been astronomically detected, contradicting the efficient reaction channel found here. This is likely due to other pathways, including regular hydrogenation reactions, as discussed separately in part II of this study.

Item Type:Article
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URLURL TypeDescription DOIArticle!divAbstractPublisherArticle
Ioppolo, S.0000-0002-2271-1781
Linnartz, H.0000-0002-8322-3538
Additional Information:© 2014 the Owner Societies. Received 20th November 2013; Accepted 14th March 2014. First published online 17 Mar 2014. The LERMA-LAMAp team acknowledges the support of the national PCMI programme founded by CNRS. M.M. and G.F. acknowledge LASSIE, a European FP7 ITN Community’s Seventh Framework Programme under Grant Agreement No. 238258. Support for S.I. from the Niels Stensen Fellowship and the Marie Curie Fellowship (FP7-PEOPLE-2011-IOF-300957) is gratefully acknowledged. The work in Leiden is supported by NOVA and NWO.
Funding AgencyGrant Number
European Community Seventh Framework Program (FP7/2007-2013)238258
Niels Stensen FellowshipUNSPECIFIED
Marie Curie FellowshipFP7-PEOPLE-2011-IOF-300957
Netherlands Research School for Astronomy (NOVA)UNSPECIFIED
Netherlands Organization for Scientific Research (NWO)UNSPECIFIED
Record Number:CaltechAUTHORS:20140409-104248296
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Official Citation:Minissale, M., Fedoseev, G., Congiu, E., Ioppolo, S., Dulieu, F., & Linnartz, H. (2014). Solid state chemistry of nitrogen oxides - Part I: surface consumption of NO. [10.1039/C3CP54917H]. Physical Chemistry Chemical Physics, 16(18), 8257-8269. doi: 10.1039/c3cp54917h
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:44821
Deposited By: Jason Perez
Deposited On:09 Apr 2014 18:59
Last Modified:09 Mar 2020 13:19

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