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  Field ion spectroscopy of oscillating surface reactions: H2/O2 and H2/H2O on platinum

Ernst, N., Bozdech, G., Gorodetskii, V., & Block, J. H. (1996). Field ion spectroscopy of oscillating surface reactions: H2/O2 and H2/H2O on platinum. International Journal of Mass Spectrometry and Ion Processes, 152(2-3), 185-191. doi:10.1016/0168-1176(95)04332-2.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0009-BA91-1 Version Permalink: https://hdl.handle.net/21.11116/0000-0009-D160-E
Genre: Journal Article

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 Creators:
Ernst, Norbert1, Author           
Bozdech, Georg1, Author           
Gorodetskii, V.2, Author
Block, Jochen H.3, Author           
Affiliations:
1Chemical Physics, Fritz Haber Institute, Max Planck Society, ou_24022              
2Boreskov Institute of Catalysis, Prospekt Lavrentieva 5, Novosibirsk 630090, Russia, ou_persistent22              
3Fritz Haber Institute, Max Planck Society, ou_24021              

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 Abstract: Besides a smaller fraction of H2O+, the interaction of H2 and O2 with a platinum field ion emitter produces mainly H3O+ via a novel surface reaction-field desorption pathway:

Hads+H2Of-ads→H3Ogas++ePt-

For this reaction, the H3O+ field ion appearance energy is measured as 9.2 eV, almost 1.5 eV smaller than the value reported earlier for the H2O/Pt reaction system. The new protonation pathway is verified through mass-resolved and energy-resolved experiments on product ions of the oscillating H2/H2O/Pt and D2/H2O/Pt reaction systems. For H2/O2/Pt, the H2O+ appearance energy data suggest a partial transfer of reaction enthalpy to desorbing H2O molecules.

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Language(s): eng - English
 Dates: 1995-08-301995-09-181996-02-29
 Publication Status: Issued
 Pages: 7
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1016/0168-1176(95)04332-2
 Degree: -

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Title: International Journal of Mass Spectrometry and Ion Processes
Source Genre: Journal
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Publ. Info: Amsterdam : Elsevier
Pages: 7 Volume / Issue: 152 (2-3) Sequence Number: - Start / End Page: 185 - 191 Identifier: ISSN: 0168-1176
CoNE: https://pure.mpg.de/cone/journals/resource/110985822450018