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Proceedings Paper

In-situ investigation of catalytic reactions with second harmonic generation
Author(s): Frank Eisert; Alf-Peter C. Elg; Arne Rosen
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Paper Abstract

Most knowledge on catalytic reaction mechanisms has up until now been gathered with UHV-based techniques. The extrapolation of such obtained reaction parameters to the pressure range of real application conditions is called the pressure gap. The nonlinear optical technique Second Harmonic Generation (SHG) allows studies covering the whole pressure range between UHV and application pressures. Of special importance for this purpose is the possibility to distinguish coverages of different adsorbates. In this work we show how the application of phase sensitive SHG can be used to determine coverages of different adsorbates in-situ allowing the determination of important reaction parameters. Our choice of reaction is the catalytic water formation on platinum which is already widely investigated in the literature.

Paper Details

Date Published: 30 April 1998
PDF: 8 pages
Proc. SPIE 3272, Laser Techniques for Surface Science III, (30 April 1998); doi: 10.1117/12.307126
Show Author Affiliations
Frank Eisert, Chalmers Univ. of Technology, Goteborg Univ. and Institut fuer Angewandte Physikalisch Che (Germany)
Alf-Peter C. Elg, Chalmers Univ. of Technology and Goteborg Univ. (Sweden)
Arne Rosen, Chalmers Univ. of Technology and Goteborg Univ. (Sweden)

Published in SPIE Proceedings Vol. 3272:
Laser Techniques for Surface Science III
Hai-Lung Dai; Hans-Joachim Freund, Editor(s)

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