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|Title:||Effect of interaction between CuO and CeO<sub>2</sub> on the performance of CuO-CeO<sub>2</sub> catalysts for selective oxidation of CO in H<sub>2</sub>-rich streams|
Carbon monoxide oxidation
|Abstract:||A series of CuO–CeO<sub>2</sub> catalysts have been prepared by different methods and the effects of interaction between CuO and CeO<sub>2</sub> on the performance of CuO-CeO<sub>2</sub> catalysts for selective oxidation of CO in H<sub>2</sub>-rich streams have been investigated. The results show that HY-CuO-CeO<sub>2</sub> with strong interaction and synergistic effect between interfacial CuO and CeO<sub>2</sub> exhibits superior catalytic activity, especially at low temperatures. For HY-CuO-CeO<sub>2</sub>, the temperature of 50 % CO conversion is only 75 °C and the temperature window of CO conversions up to 99.0 % is about 30 <sup>o</sup>C wide, from 120–140 °C. The strong interaction between copper and cerium oxide<sub> </sub>promotes the reduction of highly dispersed CuO species, the formation and stability of abundant Cu<sup>+</sup> species and the production of abundant oxygen vacancies and lattice oxygen of copper oxide.|
|Appears in Collections:||IJC-A Vol.51A(11) [November 2012]|
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