You are here: Home :: Area NEM :: Chemistry :: Physical chemistry

Markus Eiswirth, R. Schwankner, Gerhard Ertl

Conditions for the Occurrence of Kinetic Oscillations in the Catalytic Oxidation of CO on a Pt(100) Surface

Keywords: catalysis, kinetic oscillations, synergetics

The rate of catalytic CO oxidation at low pressures (< 10^{- 3} Torr) on a well-defined Pt(100) single crystal surface may exhibit sustained temporal oscillations which can conveniently be followed by means of the variation of the work function. In the present work the conditions (p_O2, p_CO) at T = 480 K, as well as (Pco, T) at p_O2 = 2 x 10^{- 4} Torr for the occurrence of oscillations were experimentally established. The results agree qualitatively well with the predictions of a recent theoretical model based on the periodic transformation of the surface structure.

Zeitschrift für Physikalische Chemie, Oldenbourg Wissenschaftsverlag

Print ISSN: 0942-9352
Volume: 144, 01/1985
Pages: 059 - 067

Show full article (external site)

Show all available items of this journal

 

Area NEM