Article ID Journal Published Year Pages File Type
6609852 Electrochimica Acta 2015 10 Pages PDF
Abstract
Elementary kinetic mechanisms of fuel oxidation on ceria have not been dealt with in detail in literature. An elementary kinetic model is developed considering charge transfer and adsorption steps for electrochemical H2 and CO oxidation on ceria. The reaction chemistry is solved by fitting previously obtained impedance spectra for H2 and CO oxidation on ceria. The rate determining step is found to be the charge transfer rather than the adsorption for both H2 and CO. A method is presented to extend the kinetics obtained from pattern anodes to macroscopic simulations in which the activation overvoltage can be calculated on the basis of elementary kinetics.
Related Topics
Physical Sciences and Engineering Chemical Engineering Chemical Engineering (General)
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