Observation of two reaction pathways for water formation from hydroxyl radical covered Pt(111)

Observation of two reaction pathways for water formation from hydroxyl radical covered Pt(111)

Intense molecular beams of hydroxyl radicals produced in a supersonic corona discharge source were focused and state-selected by an electrostatic hexapole. Thermal desorption spectra from a Pt(111) surface dosed with the resulting pure beam of OD radicals showed features corresponding to D 2O and O...

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Bibliographic Details
Published in:Chemical physics letters 1998-05, Vol.287 (3), p.475-479
Main Authors: Backstrand, Kyle M, Weibel, Michael A, Hain, Toby D, Curtiss, Thomas J
Format: Article
Language:eng
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Summary:Intense molecular beams of hydroxyl radicals produced in a supersonic corona discharge source were focused and state-selected by an electrostatic hexapole. Thermal desorption spectra from a Pt(111) surface dosed with the resulting pure beam of OD radicals showed features corresponding to D 2O and O 2 desorption. Two distinct types of adsorbed OD were observed depending on the dosing temperature. Dosing at 215 K generated a low temperature (215 K) D 2O desorption feature. Dosing at 275 K generated a high temperature (400 K) D 2O desorption feature. Possible origins of these two features are discussed.
ISSN:0009-2614
1873-4448