...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Catalysis science & technology >High-temperature vanadium-free catalyst for selective catalytic reduction of NO with NH3 and theoretical study of La2O3 over CeO2/TiO2
【24h】

High-temperature vanadium-free catalyst for selective catalytic reduction of NO with NH3 and theoretical study of La2O3 over CeO2/TiO2

机译：高温vanadium-free催化剂没有和NH3的选择性催化还原理论研究的La2O3 CeO2 /二氧化钛

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The high-temperature SCR catalyst La2O3-CeO2/TiO2 was prepared by an impregnation method. The effect of CeO2 and La2O3 content on NO conversion was studied and the experimental result showed that the Ce10La2 catalyst had the best catalytic activity and aging resistance. The active temperature range of the Ce10La2 catalyst is higher than 355 degrees C. The as-prepared catalysts were characterized by different methods. The introduction of La2O3 increases the specific surface area, the dispersion of CeO2, and the number of strong acid sites of the catalyst. La2O3 interacts with CeO2 to form the Ce-O-La bond on the CeO2 surface rather than forming a solid solution, which increases the concentration of Ce3+ and the surface unsaturated active oxygen, thus improving the catalytic activity. In situ DRIFTS shows that the denitration reaction is dominated by the Eley-Rideal mechanism. Density functional theory calculation shows that the adsorption of NO or NH3 on the CeO2 surface becomes easier after the introduction of La2O3.
机译：高温SCR催化剂La2O3-CeO2 /二氧化钛是由一种浸渍的方法。CeO2和La2O3内容没有转换的影响研究和实验结果显示有最好的催化,Ce10La2催化剂活动和抗老化性。Ce10La2催化剂的温度范围高于355度c .做好准备催化剂具有不同的特征方法。比表面积,CeO2的分散,和强酸网站的数量催化剂。Ce-O-La CeO2表面而不是债券形成固溶体,这就增加了Ce3 +浓度和表面不饱和活性氧,从而提高催化活动。脱硝反应是主导Eley-Rideal机制。计算表明,该吸附或后NH3 CeO2表面变得更容易引入La2O3。

著录项

相似文献

  • 外文文献
  • 中文文献
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号