A comparative study of formaldehyde and carbon monoxide complete oxidation on MnO_x-CeO_2 catalysts

作     者：刘雪松 鲁继青 千坤 黄伟新 罗孟飞 

作者机构：Zhejiang Key Laboratory for Reactive Chemistry on Solid SurfacesInstitute of Physical ChemistryZhejiang Normal University National Laboratory for Physical Sciences at the Microscale and Department of Chemical PhysicsUniversity of Science and Technology of China 

出 版 物：《Journal of Rare Earths》 (稀土学报（英文版）)

年 卷 期：2009年第27卷第3期

页      面：419-424页

核心收录：

学科分类：0709[理学-地质学] 0819[工学-矿业工程] 081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 0708[理学-地球物理学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 

基　　金：supported by the Zhejiang Provincial Natural Science Foundation (Y407020) the Qianjiang Talent Program of Zhejiang Province (QJD0702098) Xinmiao Talent Program of Zhejiang Province (2007R40G2030045) 

主　　题：MnOx-CeO2 catalysts complete oxidation HCHO CO rare earths 

摘      要：MnOx-CeO2 composite catalysts were prepared by a coprecipitation method and tested for formaldehyde （HCHO） and carbon monoxide （CO） oxidation. X-ray photon spectroscopy （XPS） results indicated that the average oxidation state of surface Mn species in CeMn composite catalyst was higher compared to the pure MnOx. The enhancement of reactivity for HCHO oxidation was due to the activation of the lattice oxygen species in MnOx by the addition of CeO2, which was confirmed by the H2 temperature programmed reduction （HE-TPR） results. The remarkable enhancement of reactivity for CO oxidation by the addition of CeO2 was due to the active oxygen species generated on the CeO2 surface which directly participated in the reaction.