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|Title:||Steady-state multiplicity in carbon monoxide oxidation over LaMnO3|
|Authors:||Chuah, G.K. |
|Keywords:||carbon monoxide oxidation|
lanthanum manganese oxide
steady state (multiple)
|Citation:||Chuah, G.K.,Jaenicke, S.,Lee, J.Y. (1991-05-02). Steady-state multiplicity in carbon monoxide oxidation over LaMnO3. Applied Catalysis 72 (1) : 51-61. ScholarBank@NUS Repository.|
|Abstract:||Multiple steady states have been observed during catalytic carbon monoxide oxidation over polycrystalline LaMnO3. The bistability was noted only at a carbon monoxide partial pressure Pco ≥ 46 kPa. The transition to the more reactive state sets in at 220°C. Upon cooling, the activity of the catalyst is sustained at a lower temperature than the ignition point. The width of the hysteresis loop increases with increasing carbon monoxide concentration. An oxidation/reduction mechanism is proposed whereby the high activity state is the surface-reduced form. The apparent activation energy is 16-19 kJ/mol for both steady states of the catalyst, indicating that a similar pathway for carbon monoxide oxidation is followed in the two states. © 1991.|
|Source Title:||Applied Catalysis|
|Appears in Collections:||Staff Publications|
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