Study of self-oscillations during CO oxidation over Cu foil

The oscillatory behavior during CO oxidation over Cu foil has been observed in the temperature range of 350–750 °C. The oscillatory behavior occurred in CO excess similar to the well-known oscillations during CO oxidation over Ni and Co, but in contrast to the oscillations over Pt, Pd, Ir, and Ru. T...

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Veröffentlicht in:	Reaction kinetics, mechanisms and catalysis mechanisms and catalysis, 2020-02, Vol.129 (1), p.57-64
Hauptverfasser:	Bychkov, V. Yu, Tulenin, Yu. P., Gorenberg, A. Ya, Korchak, V. N.
Format:	Artikel
Sprache:	eng
Schlagworte:	Catalysis Chemistry Chemistry and Materials Science Industrial Chemistry/Chemical Engineering Physical Chemistry
Online-Zugang:	Volltext
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Zusammenfassung:	The oscillatory behavior during CO oxidation over Cu foil has been observed in the temperature range of 350–750 °C. The oscillatory behavior occurred in CO excess similar to the well-known oscillations during CO oxidation over Ni and Co, but in contrast to the oscillations over Pt, Pd, Ir, and Ru. The periodic variation in oxygen imbalance together with variation in color changes during the oscillations and ex situ XRD measurements indicate that the oscillations were closely connected with the reversible oxidation of Cu to Cu 2 O. The oscillations were accompanied by propagation of oxidation and reduction wavefronts.
ISSN:	1878-5190 1878-5204
DOI:	10.1007/s11144-019-01718-2