Activation of catalyst for gas phase combustion by electrochemical pre-treatment

The catalytic activity of IrO2 catalyst used as an electrode on a YSZ solid electrolyte cell for the gas phase combustion of ethylene can be increased by electrochem. pre-treatment. Thus, the polarization of the IrO2 electrode for 90 min at 300 mA, relative to a Au electrode, both deposited on YSZ, increases the activity of the IrO2 catalyst after current interruption by a factor of 3. In situ catalyst work function measurements showed that after the electrochem. pre-treatment the IrO2 catalyst obtains higher work function. The activation of the catalyst is explained through the formation of a higher oxide, IrO2+d. [on SciFinder (R)]

Published in:
Energy and Electrochemical Processing for a Cleaner Environment, 495-500

 Record created 2006-02-22, last modified 2018-01-27

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