English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/14502
Compartir / Impacto:
Add this article to your Mendeley library MendeleyBASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL

Ion Chemistry in Cold Plasmas of H2 with CH4 and N2

AutorTanarro, Isabel ; Herrero, Víctor J. ; Islyaikin, Andrey M.; Méndez, Isabel; Tabarés, Francisco L.; Tafalla, D.
Fecha de publicación28-ago-2007
EditorAmerican Chemical Society
CitaciónJournal of Physical Chemistry A 111(37): 9003–9012 (2007)
ResumenThe distributions of ions and neutrals in low-pressure (≈10-2 mbar) DC discharges of pure hydrogen and hydrogen with small admixtures (5%) of CH4 and N2 have been determined by mass spectrometry. Besides the mentioned plasma precursors, appreciable amounts of NH3 and C2Hx hydrocarbons, probably mostly from wall reactions, are detected in the gas phase. Primary ions, formed by electron impact in the glow region, undergo a series of charge transfer and reactive collisions that determine the ultimate ion distribution in the various plasmas. A comparison of the ion mass spectra for the different mixtures, taking into account the mass spectra of neutrals, provides interesting information on the key reactions among ions. The prevalent ion is H3+ in all cases, and the ion chemistry is dominated by protonation reactions of this ion and some of its derivatives. Besides the purely hydrogenic ions, N2H+, NH4+, and CH5+ are found in significant amounts. The only mixed C/N ion clearly identified is protonated acetonitrile C2H4N+. The results suggest that very little HCN is formed in the plasmas under study.
Descripción10 pages, 5 figures.-- Printed version published Sep 20, 2007.
Versión del editorhttp://dx.doi.org/10.1021/jp073569w
Aparece en las colecciones: (CFMAC-IEM) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
H2-N2-CH4 Ion Chemistry - J Chem Phys A.pdf215,65 kBAdobe PDFVista previa
Mostrar el registro completo

Artículos relacionados:

NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.