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Novel sensor for studying the transient behaviour of an iron antimonate partial oxidation catalyst

Lookup NU author(s): Professor Ian Metcalfe


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Oxygen-ion conducting solid electrolyte cells were prepared with Pt reference electrodes and Fe2O3-Sb2O4 working electrodes. The working electrode served as both electrode and catalyst during the partialoxidation of propene. The electrochemical cell allowed thermodynamic catalyst surface oxygen activities to be followed and acted as a sensor of catalyst state. It is clear that the catalyst was much more selective for acrolein formation at lower oxygen activities as indicated by the sensor signal. There is evidence to suggest that the oxygen activity measured by the sensor is as a result of the presence of adsorbed oxygen and not lattice oxygen.Based on the results it appears that potentiometric sensors could provide important additional information for catalytic partialoxidation process monitoring and control.

Publication metadata

Author(s): Barth D, Sahibzada M, Metcalfe IS

Editor(s): G.F. Froment, K.C. Waugh

Publication type: Conference Proceedings (inc. Abstract)

Publication status: Published

Conference Name: Reaction Kinetics and the Development of Catalytic Processes

Year of Conference: 1999

Pages: 403-406

Publisher: Elsevier


DOI: 10.1016/S0167-2991(99)80172-4

Series Title: Studies in Surface Science and Catalysis