Reduction of NO by CO using Pd–CeTb and Pd–CeZr catalysts supported on SiO_2 and La_2O_3–Al_2O_3

作     者：Victor Ferrer Dora Finol Roger Solano Alexander Moronta Miguel Ramos 

作者机构：Instituto de Superficies y Catálisis Facultad de Ingeniería Universidad del Zulia Instituto Zuliano de Investigaciones Tecnológicas km 15 carretera Vía a la Ca?ada Apartado 331 Venezuela 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：2015年第27卷第1期

页      面：87-96页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 

基　　金：supported by the Consejo de Desarrollo Científico y Humanístico of La Universidad del Zulia (CONDES-LUZ CC-0090-12) Fondo Nacional de Ciencia, Tecnología e Innovación (FONACIT N° 2011001345) 

主　　题：Mixed oxides OSC Reduction of NO by CO Three way catalysts 

摘      要：The catalytic activity of Pd catalysts supported on Ce0.73Tb0.27Ox/SiO2, Ce0.6Zr0.4Ox/Si O2,Ce0.73Tb0.27Ox/La2O3–Al2O3and Ce0.6Zr0.4Ox/La2O3–Al2O3was studied using the reduction of NO by CO. The catalysts were characterized by X-ray fluorescence, surface area, X-ray diffraction, temperature-programmed reduction, CO chemisorption and oxygen storage capacity. Temperature-programmed reduction results indicated that Tb or Zr incorporation improves the reducibility and oxygen storage capacity. CO chemisorption data suggested the presence of large Pd O particles due to the low CO/Pd ratio. No significant differences were obtained in light off temperatures（T Light off） for all Pd catalysts and the most active was1.5%Pd/Ce0.6Zr0.4Ox/SiO2.