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Selective catalytic reduction of NOx with NH3 over Sb modified CeZrOx catalyst

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Abstract

A series of novel Sb modified CeZrOx catalysts were prepared by a homogeneous precipitation method and used for the selective catalytic reduction NOx by NH3 (NH3-SCR). The CeSbZrOx catalyst exhibited high SCR activity and SO2/H2O resistance. The characterization results showed that the addition of Sb into the CeZrOx catalyst inhibited the growth of CeO2 crystallite size, enlarged the surface area and pore volume, increased the acidity and enhanced the redox ability, intensified the NH3 and NOx adsorption capability and improved Ce3+/Ce4+ molar ratio on the catalyst surface, all of which were responsible for achieving the high NH3-SCR activity.

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Acknowledgements

We gratefully acknowledge the financial support of Science Foundation of the Fujian Province (No. 2017J01568, No. 2017J01673 and No. 2015J01033) and the General Project of Fujian Provincial Department of Education (No. JA15344 and JAT160327).

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Authors and Affiliations

  1. College of Ecological Environmental and Urban Construction, Fujian University of Technology, Fuzhou, 350118, China

    Ronghui Shi, Xiaoying Lin, Zhigong Zheng, Ren Feng, Yamin Liu, Liufang Ni & Binhan Yuan

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  1. Ronghui Shi
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  2. Xiaoying Lin
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  3. Zhigong Zheng
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  4. Ren Feng
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  5. Yamin Liu
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Correspondence to Ronghui Shi.

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Shi, R., Lin, X., Zheng, Z. et al. Selective catalytic reduction of NOx with NH3 over Sb modified CeZrOx catalyst. Reac Kinet Mech Cat 124, 217–227 (2018). https://doi.org/10.1007/s11144-017-1314-8

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  • DOI: https://doi.org/10.1007/s11144-017-1314-8

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