Abstract
The present study was carried out to analyze the NO storage and reduction (NSR) on Li2CuO2. The objective of this investigation was to determine the first insights of NSR, while using a new material. Li2CuO2 was initially evaluated as NO sorbent (2 mL/min) in the presence of different oxygen contents. These results were used to verify the NO consumption and chemical sorption and to propose a reaction mechanism for the lithium nitrate formation. The best NSR results were obtained between 200 and 300 °C and Li2CuO2 showed high stability during cycling processes. A reaction mechanism, based on the Mars–Van Krevelen model was presented. After that, similar experiments were performed but using a lower NO concentration (777 ppm), where the results were equivalent to those obtained with higher NO concentrations. Thus, results establish interesting bases to analyze and allow to a double NO NSR-SCR process in the future, using alkaline ceramics.
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