Heterogeneous reactions between ions NH3+and NH+andhydrocarbons adsorbed on a tungsten surface.Formation of HCN+in NH+-surface hydrocarbon collisions

0450877 - ÚFCH JH 2016 RIV NL eng J - Článek v odborném periodiku
Harnisch, M. - Scheier, P. - Herman, Zdeněk
Heterogeneous reactions between ions NH3+and NH+andhydrocarbons adsorbed on a tungsten surface.Formation of HCN+in NH+-surface hydrocarbon collisions.
International Journal of Mass Spectrometry. Roč. 392, DEC 2015 (2015), s. 139-144. ISSN 1387-3806. E-ISSN 1873-2798
Institucionální podpora: RVO:61388955
Klíčová slova: ion-surface collisions * NH3+and NH+projectiles * surface hydrocarbons
Kód oboru RIV: CF - Fyzikální chemie a teoretická chemie
Impakt faktor: 2.183, rok: 2015

tInteraction of NH3+(ND3+) and NH+with a hydrocarbon-covered tungsten surface kept at room tempera-ture or heated to 150 and 300◦C showed a series of reactions between the projectile ion and hydrocarbonsadsorbed on the tungsten surface. Collisions with NH3+showed formation of NH4+, HCNH+, and CH2NH2+,with NH4+strongly prevailing at low incident energies of the projectile ion. Analogously, collisions withND3+showed formation of ND3H+, HCND+, and CH2ND2+with dominant contributions of ND3H+at lowincident energies. No formation of HCN+(DCN+) could be positively identified. In reactions with NH+, for-mation of HCN+was clearly observed; the dependence of the normalized yield of HCN+on incident energyindicated a threshold at about 40 eV which might be due to an activation energy or an endothermicity ofthe surface reaction of about 2.4–3.2 eV.
Trvalý link: http://hdl.handle.net/11104/0252226