Abstract
Measurements of contact potential difference (CPD) and effluent oxygen concentration were used to monitor oscillations in the surface state and reaction rate during the oxidation of hydrogen over a nickel plate in a continuous flow reactor. CPD measurements indicate that the system oscillates between and active state in which the reduced surface is covered mainly by chemisorbed oxygen and a less active oxidized state. Heat and mass transfer limitations affect the shape, amplitude and period of the oscillations. However, the oscillations do not disappear when transport limitations become negligible.
Original language | English |
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Pages (from-to) | 374-377 |
Number of pages | 4 |
Journal | Berichte der Bunsengesellschaft/Physical Chemistry Chemical Physics |
Volume | 84 |
Issue number | 4 |
DOIs | |
State | Published - 1980 |
Externally published | Yes |