Performance of CeSnTiOx Mixed Oxides Catalysts for Selective Catalytic Reduction of NO with NH3 - 文章详情页

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摘要：

A　series　of　CeSnTiOx　mixed　oxides　catalysts　were　prepared　by　a　co-precipitation　method　with　Ce(NO3)3,　SnCl4　and　TiOSO4　as　precursors　and　their　performances　for　selective　catalytic　reduction　(SCR)　of　NO　with　NH3　as　the　reductant　were　investigated.　It　was　found　that　the　Ce0.42Sn0.05TiOx　catalyst　showed　the　highest　low　temperature　activity,　on　which　the　NO　conversion　reached　97%　at　180℃.　The　characterization　results　of　the　powder　X-ray　diffraction　(XRD),　the　nitrogen　sorption　isotherm　measurement　(BET),　the　temperature-programmed　reduction　(H2-TPR),　in-situ　diffuse　reflectance　Fourier　transform　infrared　spectroscopy　(DRIFTS),　X-ray　photoelectron　spectra　(XPS)　and　etc.　showed　that　the　doping　a　little　bit　of　tin　to　the　Ce0.46TiOx　mixed　oxide　could　increase　the　BET　surface　area　and　the　reducibility　of　cerium　species,　and　optimize　the　surface　acidity　and　the　ratios　of　Ce3+/(Ce3++Ce4+)　and　Oα/(Oα+Oβ)　of　the　catalysts.　©　2018,　Editorial　Office　of　Journal　of　the　Chinese　Society　of　Rare　Earths.　All　right　reserved.

关键词：

CeTiOx mixed oxides; NOx; Selective catalytic reduction (SCR); SnO2

作者机构：

[ 1 ] [Su, Y.]Beijing Key Laboratory for Green Catalysis and Separation, Beijing University of Technology, Beijing, 100124, China
[ 2 ] [He, H.]Beijing Key Laboratory for Green Catalysis and Separation, Beijing University of Technology, Beijing, 100124, China
[ 3 ] [He, H.]Key Laboratory of Beijing on Regional Air Pollution Control, Beijing University of Technology, Beijing, 100124, China
[ 4 ] [He, H.]Collaborative Innovation Center of Electric Vehicles in Beijing, Beijing, 100081, China
[ 5 ] [Sun, X.]Beijing Key Laboratory for Green Catalysis and Separation, Beijing University of Technology, Beijing, 100124, China
[ 6 ] [Yan, J.]Beijing Key Laboratory for Green Catalysis and Separation, Beijing University of Technology, Beijing, 100124, China
[ 7 ] [Zhu, H.]Beijing Key Laboratory for Green Catalysis and Separation, Beijing University of Technology, Beijing, 100124, China
[ 8 ] [Song, L.]Beijing Key Laboratory for Green Catalysis and Separation, Beijing University of Technology, Beijing, 100124, China
[ 9 ] [Song, L.]Key Laboratory of Beijing on Regional Air Pollution Control, Beijing University of Technology, Beijing, 100124, China
[ 10 ] [Qiu, W.]Beijing Key Laboratory for Green Catalysis and Separation, Beijing University of Technology, Beijing, 100124, China
[ 11 ] [Qiu, W.]Key Laboratory of Beijing on Regional Air Pollution Control, Beijing University of Technology, Beijing, 100124, China

通讯作者信息：

何洪
[He, H.]Beijing Key Laboratory for Green Catalysis and Separation, Beijing University of TechnologyChina

电子邮件地址：

hehong@bjut.edu.cn

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