Effects of cerium precursors on surface properties of mesoporous CeMnO_x catalysts for toluene combustion
来源期刊：Journal of Rare Earths2020年第1期
论文作者：Changyu Zhang Wei Chu Feng Chen Lei Li Ruiyu Jiang Jinlong Yan
文章页码：70 - 75
摘 要：Mesoporous CeMnOx composite oxides catalysts were prepared by surfactant-assisted co-precipitation method and used for the catalytic oxidation of toluene.The effect of different cerium precursors[Ce（NO3）3 and（NH4）2 Ce（NO3）6] on catalyst structure,surface properties and toluene combustion activities of mesoporous CeMnOx catalysts were investigated.The Ce（Ⅲ）MnOx catalyst prepared from Ce（NO3）3 precursor shows higher catalytic activity,with a 90% conversion temperature of 240℃,which is better than the Ce（Ⅳ）MnOx catalyst derived from（NH4）2 Ce（NO3）6] precursor.On the basis of characterizations,it reveals that abundant surface content of Mn4+,better redox behavior and larger concentration of surface active oxygen species are responsible for the excellent catalytic performance.
Changyu Zhang1,2，Wei Chu3，Feng Chen4，Lei Li2,4，Ruiyu Jiang2，Jinlong Yan2
1. School of Environment and Safety Engineering,Changzhou University2. School of Environmental Science and Engineering,Yancheng Institute of Technology3. Department of Chemical Engineering,Sichuan University4. Jiangsu Key Laboratory for Environment Functional Materials,Suzhou University of Science and Technology
摘 要：Mesoporous CeMnOx composite oxides catalysts were prepared by surfactant-assisted co-precipitation method and used for the catalytic oxidation of toluene.The effect of different cerium precursors[Ce（NO3）3 and（NH4）2 Ce（NO3）6] on catalyst structure,surface properties and toluene combustion activities of mesoporous CeMnOx catalysts were investigated.The Ce（Ⅲ）MnOx catalyst prepared from Ce（NO3）3 precursor shows higher catalytic activity,with a 90% conversion temperature of 240℃,which is better than the Ce（Ⅳ）MnOx catalyst derived from（NH4）2 Ce（NO3）6] precursor.On the basis of characterizations,it reveals that abundant surface content of Mn4+,better redox behavior and larger concentration of surface active oxygen species are responsible for the excellent catalytic performance.
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