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Effects of Different Precipitants on the De–NO Efficiency of the Fe2O3 Catalyst Synthesized by Co-precipitation Method

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Clean Coal and Sustainable Energy (ISCC 2019)

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Abstract

Fe2O3 catalysts synthesized by the co-precipitation method with two different precipitants (NH4OH/Na2CO3) were experimentally investigated in the selective catalytic reduction (SCR) of NO with NH3. It was found that the catalyst in which NH4OH was used as precipitant exhibited high NO conversion (above 80% from 250–400 °C). XRD, BET, EDS, and FT-IR characterizations were done to examine the catalysts. The catalyst prepared by using NH4OH precipitant exhibited a lower crystallization degree together with better pore structure, and an increase in the O/Fe ratio, which was helpful for the NH3-SCR reaction. Also, the SO2 tolerance of the catalyst was investigated. The results exhibited that the addition of SO2 gradually decreased the SCR activity. FT-IR analysis of the catalyst exhibited that after the addition of SO2 in the De–NO reaction the development of ammonium sulfate species on the surface of the catalyst caused pore plugging and was responsible for a reduction in the NH3-SCR activity.

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Acknowledgements

We are thankful to the National Natural Science Foundation of China (Grant no. 50676057), which has provided the necessary support for this work.

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Authors and Affiliations

  1. Institute of Thermal Energy Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China

    Naveed Husnain, Enlu Wang, Shagufta Fareed, Kai Li, Deli Li & Qi Wang

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  1. Naveed Husnain
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  2. Enlu Wang
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  3. Shagufta Fareed
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  4. Kai Li
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  5. Deli Li
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  6. Qi Wang
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Corresponding author

Correspondence to Enlu Wang .

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Editors and Affiliations

  1. Department of Energy and Power Engineering, Tsinghua University, Beijing, China

    Junfu Lyu

  2. Department of Energy and Power Engineering, Tsinghua University, Beijing, China

    Shuiqing Li

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Husnain, N., Wang, E., Fareed, S., Li, K., Li, D., Wang, Q. (2022). Effects of Different Precipitants on the De–NO Efficiency of the Fe2O3 Catalyst Synthesized by Co-precipitation Method. In: Lyu, J., Li, S. (eds) Clean Coal and Sustainable Energy. ISCC 2019. Environmental Science and Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-16-1657-0_64

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  • DOI: https://doi.org/10.1007/978-981-16-1657-0_64

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  • Publisher Name: Springer, Singapore

  • Print ISBN: 978-981-16-1656-3

  • Online ISBN: 978-981-16-1657-0

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