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Influence of various metal oxides in the bistability observed in the oxidative dehydrogenation of 2 - propanol over copper catalysts

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Document type : Communication à un colloque (Conference Paper) – Présentation orale avec comité de sélection
Abstract :

This article presents new results concerning a bistability phenomenon observed recently in the oxidative dehydrogenation of 2- propanol over copper catalysts. In this system, an activity hysteresis loop is observed when the partial oxygen pressure is varied. This bistability has been explained by the oxidation of metallic copper when the partial oxygen pres sure increases and copper oxide reduction when the partial oxygen pressure decreases. In the experiments reported here, an external second phase (alpha-Sb2O4, SnO2, Cr2O3, CeO2, Co3O4, MoO3, PbO2, NiO, Bi2O3 and MnO2) has been mixed with the copper catalysts. This modifies the hysteresis loop. The possible role played by the oxygen spillover at low temperature (150 degrees C) on this modification is discussed.
Publication date : 1996
Language : Anglais
Conference : "2nd International Conference on Unsteady-State Processes in Catalysis", ST LOUIS(Mo) (Sep 11-14, 1995)
Journal information : "Canadian Journal of Chemical Engineering" - Vol. 74, no. 5, p. 600-605 (1996)
Peer reviewed : yes
issn : 0008-4034
e-issn : 1939-019X
Publisher : Canadian Soc Chemical Engineering (Ottawa)
Affiliation : UCL - Autre
Keywords : Bistability ; Oscillations ; Oxidative Dehydrogenation Of 2 - Propanol ; Copper Catalyst
Links :
Bibliographic reference Gil, A. ; Ruiz, Patricio ; Delmon, Bernard. Influence of various metal oxides in the bistability observed in the oxidative dehydrogenation of 2 - propanol over copper catalysts.2nd International Conference on Unsteady-State Processes in Catalysis (ST LOUIS(Mo), Sep 11-14, 1995). In: Canadian Journal of Chemical Engineering, Vol. 74, no. 5, p. 600-605 (1996)
Permanent URL http://hdl.handle.net/2078.1/62836

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