期刊
CATALYSIS TODAY
卷 153, 期 3-4, 页码 170-175出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cattod.2010.01.064
关键词
Mn-Ce oxides; Redox-precipitation method; o-Xylene; Complete catalytic oxidation
资金
- National Natural Science Foundation of China [20977024]
- Natural Science Foundation of Hebei Province [B2009000258]
- Natural Science Foundation of Hebei Education Department [2008128]
- Doctoral Foundation of Hebei Normal University [L2005B16]
A series of Mn-Ce oxides were prepared using a redox-precipitation method and the complete catalytic oxidation of o-xylene was examined Catalytic activity was evaluated in terms of both o-xylene conversion and CO2 yield The effects of the Mn-at/Ce-at atomic ratio and calcination temperature on the features of catalyst structure and catalytic behavior were examined When the Mn-at/Ce-at ratio was 1 5 and the catalyst was calcined at 400 degrees C, the conversion of o-xylene was 100% and the CO2 yield was 100% at 240 degrees C X-ray diffraction (XRD). X-ray fluorescence (XRF), X-ray photoelectron spectroscopy (XPS), and hydrogen temperature-programmed reduction (H-2-TPR) studies revealed that the catalysts prepared via the redox-precipitation method possessed a homogenous dispersion of amorphous MnO2 and CeO2 nanoparticles, in the main active phase, MnO2 provided available oxygen species and CeO2 enhanced oxygen mobility The synergistic effects between MnO2 and CeO2 potentiated the catalytic activity necessary for the complete catalytic oxidation of o-xylene (C) 2010 Elsevier B V All rights reserved
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据