Dust grains in the interstellar medium are known to serve as the first chemical laboratory where the rich inventory of interstellar molecules are synthesized. Here we present a study of the formation of hydroxylamine—NH2OH—via the non-energetic route NO + H (D) on crystalline H2O and amorphous silicate under conditions relevant to interstellar dense clouds. Formation of nitrous oxide (N2O) and water (H2O, D2O) is also observed and the reaction network is discussed. Hydroxylamine and water results are detected in temperature-programmed desorption (TPD) experiments, while N2O is detected by both reflection-absorption IR spectroscopy and TPD techniques. The solid state NO + H reaction channel proves to be a very efficient pathway to NH2OH formation in space and may be a potential starting point for prebiotic species in dark interstellar clouds. The present findings are an important step forward in understanding the inclusion of interstellar nitrogen into a non-volatile aminated species since NH2OH provides a solid state nitrogen reservoir along the whole evolutionary process of interstellar ices from dark clouds to planetary systems.
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7 August 2012
Research Article|
August 07 2012
Efficient surface formation route of interstellar hydroxylamine through NO hydrogenation. I. The submonolayer regime on interstellar relevant substrates Available to Purchase
E. Congiu;
1LERMA-LAMAp,
Université de Cergy-Pontoise
, Observatoire de Paris, ENS, UPMC, UMR 8112 du CNRS, 5 mail Gay Lussac, 95000 Cergy Pontoise Cedex, France
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H. Chaabouni;
H. Chaabouni
1LERMA-LAMAp,
Université de Cergy-Pontoise
, Observatoire de Paris, ENS, UPMC, UMR 8112 du CNRS, 5 mail Gay Lussac, 95000 Cergy Pontoise Cedex, France
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C. Laffon;
C. Laffon
2
Laboratoire de Chimie-Physique
, Matière et Rayonnement, Université Pierre-et-Marie Curie (UPMC-Univ Paris 06) and CNRS (UMR 7614), 11 rue Pierre-et-Marie-Curie, 75231 Paris, France
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P. Parent;
P. Parent
2
Laboratoire de Chimie-Physique
, Matière et Rayonnement, Université Pierre-et-Marie Curie (UPMC-Univ Paris 06) and CNRS (UMR 7614), 11 rue Pierre-et-Marie-Curie, 75231 Paris, France
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S. Baouche;
S. Baouche
1LERMA-LAMAp,
Université de Cergy-Pontoise
, Observatoire de Paris, ENS, UPMC, UMR 8112 du CNRS, 5 mail Gay Lussac, 95000 Cergy Pontoise Cedex, France
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F. Dulieu
F. Dulieu
1LERMA-LAMAp,
Université de Cergy-Pontoise
, Observatoire de Paris, ENS, UPMC, UMR 8112 du CNRS, 5 mail Gay Lussac, 95000 Cergy Pontoise Cedex, France
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E. Congiu
1
H. Chaabouni
1
C. Laffon
2
P. Parent
2
S. Baouche
1
F. Dulieu
1
1LERMA-LAMAp,
Université de Cergy-Pontoise
, Observatoire de Paris, ENS, UPMC, UMR 8112 du CNRS, 5 mail Gay Lussac, 95000 Cergy Pontoise Cedex, France
2
Laboratoire de Chimie-Physique
, Matière et Rayonnement, Université Pierre-et-Marie Curie (UPMC-Univ Paris 06) and CNRS (UMR 7614), 11 rue Pierre-et-Marie-Curie, 75231 Paris, France
a)
Author to whom correspondence should be addressed. Electronic mail: [email protected].
J. Chem. Phys. 137, 054713 (2012)
Article history
Received:
May 15 2012
Accepted:
July 09 2012
Connected Content
A companion article has been published:
Efficient surface formation route of interstellar hydroxylamine through NO hydrogenation. II. The multilayer regime in interstellar relevant ices
Citation
E. Congiu, H. Chaabouni, C. Laffon, P. Parent, S. Baouche, F. Dulieu; Efficient surface formation route of interstellar hydroxylamine through NO hydrogenation. I. The submonolayer regime on interstellar relevant substrates. J. Chem. Phys. 7 August 2012; 137 (5): 054713. https://doi.org/10.1063/1.4738895
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