期刊
CHEMICAL ENGINEERING JOURNAL
卷 169, 期 1-3, 页码 173-179出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2011.03.001
关键词
N2O decomposition; O-2 effect; Rh; CeO2; Al2O3
This study investigated the effect of adding CeO2 to an Rh/Al2O3 catalyst on the decomposition of nitrous oxide (N2O). The Rh/CeO2 catalyst was shown to have a high catalytic activity but was significantly affected by oxygen. In contrast, the Rh/Al2O3 catalyst has moderate catalytic activity and was unaffected by oxygen. In order to avoid the adverse effects of oxygen while simultaneously enhancing catalytic activity, we developed a new catalyst, Rh/CeO2-Al2O3, which was prepared using three different methods (impregnation, co-precipitation, and ball milling). Activity tests, H-2 TPR, DRIFTS, and O-2 off/on tests confirmed that the Rh/CeO2-Al2O3 catalyst prepared using the co-precipitation method had the highest catalytic activity and inhibition by oxygen was reduced. (C) 2011 Elsevier B.V. All rights reserved.
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