Article Dans Une Revue Physical Chemistry Chemical Physics Année : 2009

Chemistry induced by low-energy electrons in condensed multilayers of ammonia and carbon dioxide

Résumé

We have investigated by means of HREEL spectroscopy electron induced reactivity in a binary CO2 : NH3 ice mixture. It was shown that the interaction of low energy electrons (9-20 eV) with such mixtures induces the synthesis of neutral carbamic acid NH2COOH and that flashing the sample at 140 K induces the formation of ammonium carbamate. The products have been assigned by FTIR spectroscopy of a CO2 : NH3 mixture heated from 10 K to 240 K. A mechanism involving dissociation of NH3 molecules into NH2 and H radicals is proposed to explain the product formation.

Dates et versions

hal-00367757 , version 1 (12-03-2009)

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M. Bertin, I. Martin, Fabrice Duvernay, Patrice Theulé, Jean-Baptiste Bossa, et al.. Chemistry induced by low-energy electrons in condensed multilayers of ammonia and carbon dioxide. Physical Chemistry Chemical Physics, 2009, 11, pp.1838. ⟨10.1039/b812796d⟩. ⟨hal-00367757⟩
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