CeO_2/TiO_2催化剂上NH_3选择性催化还原NO反应动力学研究  

Kinetic Study on Selective Catalytic Reduction of NO with NH_3 Over CeO_2/TiO_2 Catalysts

作　　者：闫艳[1] 黄善波[1] 姜烨[1] 宋文霞[1] 王新伟[1] 张秀霞[1] 

机构地区：[1]中国石油大学(华东)储运与建筑工程学院,青岛266580

出　　处：《工程热物理学报》2015年第2期437-440,共4页Journal of Engineering Thermophysics

基　　金：山东省自然科学基金项目(No.ZR2011EEQ004);中央高校基本科研业务费专项资金(No.12CX06076A;No.13CX02084A)

摘　　要：采用溶胶-凝胶法制备了CeO_2/TiO_2催化剂,对CeO_2/TiO_2催化剂上NH_3选择性催化还原NO反应进行了动力学研究。实验结果表明:NO转化速率与NO成一级反应,与NH_3成零级反应,与O_2成0.5级反应,反应主要遵循Eley-Rideal机理进行;该反应的活化能为51.2 kJ/mol。CeO_2/TiO_2 catalysts were prepared by a sol-gel method.The reaction kinetics were studied on the selective catalytic reduction of NO with NH3 over the catalysts.The results showed that the reaction was a first-order reaction with NO,a zero-order reaction with NH3 and nearly half-order with O_2.The reaction followed the Eley-Rideal mechanism model.The activation energy of the reaction was 51.2 kJ/mol.

关 键 词：NO 选择性催化还原 NH₃ CeO₂/TiO₂催化剂 动力学 

分 类 号：X701[环境科学与工程—环境工程] O643.36[理学—物理化学]