Effects of cerium and vanadium on the activity and selectivity of MnOx-TiO2 catalyst for low-temperature NH3-SCR |
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| Authors: | WU Xiaodong SI Zhichun LI Guo WENG Duan MA Ziran |
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| Affiliation: | WU Xiaodong,SI Zhichun,LI Guo,WENG Duan,MA Ziran (State Key Laboratory of New Ceramics & Fine Process,Department of Materials Science and Engineering,Tsinghua University,Beijing 100084,China) |
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| Abstract: | MnOx-TiO2,CeO2-MnOx-TiO2 and V2O5-MnOx-TiO2 catalysts for low-temperature NH3-SCR were prepared by sol-gel method.The results showed that both cerium and vanadium prevented the transformation of anatase TiO2 to the rutile phase.The addition of vanadium oxide induced the segregation of crystalline Mn2O3,which contributed little to low-temperature SCR and ammonia oxidation,from the MnOx-TiO2 solid solutions.However,the selectivity of the V-containing catalyst was almost 100% due to the decreased ammonia consu... |
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| Keywords: | MnOx-TiO2 modification selective reduction of NO acid sites rare earths |
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