Abstract
The effect of infiltrating on a La0.85Sr0.15MnO3/Ce0.9Gd0.1O1.95 11-layer electrochemical reactor with CeO2 and Ce0.8Pr0.2O2−δ was studied in propene oxidation at open-circuit voltage and under polarization as a function of reaction temperature. This work outlined the importance of catalytic and electrochemical properties of infiltrated material on the ability to increase propene conversion under polarization with good faradaic efficiency. Electrochemical impedance spectroscopy was used to study the effect of infiltration material on electrode properties. The infiltration of a mixed ionic and electronic conductor, like Ce0.8Pr0.2O2−δ , increased the electrode performance at low temperature but decreased the lifetime of the oxygen ion promoters on the catalyst/electrode surface, reducing the faradaic efficiency of the reaction. The infiltration of CeO2 provided high propene conversion at open circuit and high effect of polarization associated with good faradaic efficiency, especially at low temperature.
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The authors thank all technical staff. This work was supported by Danish Strategy Research Council under the project 09–065186.
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Ippolito, D., Hansen, K.K. Effect of infiltration material on a LSM15/CGO10 electrochemical reactor in the electrochemical oxidation of propene. J Solid State Electrochem 17, 895–908 (2013). https://doi.org/10.1007/s10008-012-1941-y
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DOI: https://doi.org/10.1007/s10008-012-1941-y