Effect of CeO2 addition to Rh/Al2O3 catalyst on N2O decomposition
Effect of CeO2 addition to Rh/Al2O3 catalyst on N2O decomposition
复制标题
DOI：
10.1016/j.cej.2011.03.001
复制
发表时间：
2011-05
影响因子：
15.1
通讯作者：
Sung Su Kim;Sang Jin Lee;S. Hong
中科院分区：
文献类型：
--
作者：
Sung Su Kim;Sang Jin Lee;S. Hong
研究了在Rh/ al2o3催化剂中加入ceo2对氧化亚氮（N2O）分解的影响。Rh/ ceo2催化剂具有较高的催化活性，但受氧的影响较大。相比之下，Rh/ al2o3催化剂具有中等的催化活性，并且不受氧的影响。为了避免氧的不良影响，同时提高催化活性，我们开发了一种新的催化剂Rh/ CeO2-Al2O3，采用三种不同的方法（浸渍、共沉淀法和球磨法）制备。活性测试、H2TPR、DRIFTS和O2off/on测试证实，用共沉淀法制备的Rh/ ceo2 - al2o3催化剂具有最高的催化活性，并且氧的抑制作用降低。
This study investigated the effect of adding CeO2to an Rh/Al2O3catalyst on the decomposition of nitrous oxide (N2O). The Rh/CeO2catalyst was shown to have a high catalytic activity but was significantly affected by oxygen. In contrast, the Rh/Al2O3catalyst 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, H2TPR, DRIFTS, and O2off/on tests confirmed that the Rh/CeO2–Al2O3catalyst prepared using the co-precipitation method had the highest catalytic activity and inhibition by oxygen was reduced.