Effect of transition metal oxide doping on catalytic activity of titania for the oxidation of 1,2-dichloroethane - 文章详情页

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摘要：

Transition　metal　oxides　(MOx;　M　=　Cr,　Mn,　Fe,　Ni,　Cu)-doped　titania　solid　solution　catalysts　(10　wt%　MOx–TiO2,　denoted　as　10MOx–TiO2)　were　prepared　by　the　coprecipitation　method.　The　techniques　of　XRD,　TPR,　TPD,　XPS,　TPSR,　and　in　situ　DRIFTS　were　used　to　characterize　physicochemical　properties　of　the　materials,　and　their　catalytic　activities　were　evaluated　for　the　oxidation　of　1,2-dichloroethane　(1,2-DCE).　The　introduction　of　MOx　enhanced　adsorption　and　activation　of　oxygen　molecules,　mobility　of　surface　lattice　oxygen,　and　low-temperature　reducibility.　The　10MOx–TiO2　catalysts　showed　good　performance,　with　10CrOx–TiO2　exhibiting　the　highest　catalytic　activity　(reaction　rate　=　2.35　×　10−7　mol/(gcat　s)　and　apparent　activation　energy　(Ea)　=35　kJ/mol　at　space　velocity　=　40,000　mL/(g　h))　and　good　resistance　to　chlorine　poisoning,　The　mechanism　of　1,2-DCE　oxidation　over　10CrOx–TiO2　was　also　discussed　based　on　the　results　of　TPSR　and　in　situ　DRIFTS　characterization.　It　is　concluded　that　strong　acidity　and　redox　ability,　high　adsorbed　oxygen　species　concentration,　and　strong　interaction　between　TiO2　and　CrOx　were　accountable　for　the　good　performance　of　10CrOx–TiO2.　©　2019　Elsevier　B.V.

关键词：

1,2-Dichloroethane oxidation; Chlorinated volatile organic compound; Supported catalyst; Titania; Transition metal oxide

作者机构：

[ 1 ] [Zhang, X.]Beijing Key Laboratory for Green Catalysis and Separation, Key Laboratory of Beijing on Regional Air Pollution Control, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Laboratory of Catalysis Chemistry and Nanoscience, Department of Chemistry and Chemical Engineering, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing, 100124, China
[ 2 ] [Liu, Y.]Beijing Key Laboratory for Green Catalysis and Separation, Key Laboratory of Beijing on Regional Air Pollution Control, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Laboratory of Catalysis Chemistry and Nanoscience, Department of Chemistry and Chemical Engineering, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing, 100124, China
[ 3 ] [Deng, J.]Beijing Key Laboratory for Green Catalysis and Separation, Key Laboratory of Beijing on Regional Air Pollution Control, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Laboratory of Catalysis Chemistry and Nanoscience, Department of Chemistry and Chemical Engineering, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing, 100124, China
[ 4 ] [Jing, L.]Beijing Key Laboratory for Green Catalysis and Separation, Key Laboratory of Beijing on Regional Air Pollution Control, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Laboratory of Catalysis Chemistry and Nanoscience, Department of Chemistry and Chemical Engineering, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing, 100124, China
[ 5 ] [Yu, X.]Beijing Key Laboratory for Green Catalysis and Separation, Key Laboratory of Beijing on Regional Air Pollution Control, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Laboratory of Catalysis Chemistry and Nanoscience, Department of Chemistry and Chemical Engineering, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing, 100124, China
[ 6 ] [Han, Z.]Beijing Key Laboratory for Green Catalysis and Separation, Key Laboratory of Beijing on Regional Air Pollution Control, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Laboratory of Catalysis Chemistry and Nanoscience, Department of Chemistry and Chemical Engineering, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing, 100124, China
[ 7 ] [Dai, H.]Beijing Key Laboratory for Green Catalysis and Separation, Key Laboratory of Beijing on Regional Air Pollution Control, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Laboratory of Catalysis Chemistry and Nanoscience, Department of Chemistry and Chemical Engineering, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing, 100124, China

通讯作者信息：

[Liu, Y.]Beijing Key Laboratory for Green Catalysis and Separation, Key Laboratory of Beijing on Regional Air Pollution Control, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Laboratory of Catalysis Chemistry and Nanoscience, Department of Chemistry and Chemical Engineering, College of Environmental and Energy Engineering, Beijing University of TechnologyChina

电子邮件地址：

yxliu@bjut.edu.cn

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