Preparation and characterization of CeO2/TiO2 catalysts for selective catalytic reduction of NO with NH3
Preparation and characterization of CeO2/TiO2 catalysts for selective catalytic reduction of NO with NH3
复制标题
CeO2/TiO2 NH3 选择性催化还原 NO 催化剂的制备及表征
DOI：
10.1016/j.catcom.2009.11.024
复制
发表时间：
2010-01-25
影响因子：
3.7
通讯作者：
Cen, Kefa
中科院分区：
文献类型：
--
作者：
Gao, Xiang;Jiang, Ye;Cen, Kefa
采用三种方法制备了CeO 2/TiO 2催化剂，并考察了它们在O-2存在下对NO和NH3选择性催化还原的活性。实验结果表明，采用一步溶胶-凝胶法制备的催化剂具有最好的SCR活性和抗SO2性能，且与NO和SO2浓度无关。高的比表面积和良好的氧化还原能力是催化剂活性的重要因素，而氧化铈和二氧化钛之间的强相互作用以及高浓度的无定形或高度分散的纳米晶氧化铈是一步溶胶-凝胶法制备的催化剂具有优异性能的原因。(C)2009爱思唯尔有限公司版权所有。
CeO2/TiO2 catalysts were prepared by three methods, and their activities for SCR of NO with NH3 were investigated in the presence Of O-2. The experimental results indicate that the catalysts prepared by the single step sol-gel method have the best SCR activity and SO2 resistance regardless of the concentration of NO or SO2. High surface area and good redox ability are important to the catalytic activity, while the strong interaction between ceria and titania as well as high concentration of amorphous or highly dispersed nano-crystalline ceria should be the reason for the excellent performance of the catalyst prepared by the single step sot-gel method. (C) 2009 Elsevier B.V. All rights reserved.