Preparation of honeycombed holmium-modified Fe-Mn/TiO2 catalyst and its performance in the low temperature selective catalytic reduction of NOx

HUANG Tian-jiao; ZHANG Ya-ping; ZHUANG Ke; LU bin; ZHU Yi-wen; SHEN Kai

Volume 46 Issue 3

Mar. 2018

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Article Navigation > Journal of Fuel Chemistry and Technology > 2018 > 46(3): 319-327

HUANG Tian-jiao, ZHANG Ya-ping, ZHUANG Ke, LU bin, ZHU Yi-wen, SHEN Kai. Preparation of honeycombed holmium-modified Fe-Mn/TiO2 catalyst and its performance in the low temperature selective catalytic reduction of NOx[J]. Journal of Fuel Chemistry and Technology, 2018, 46(3): 319-327.

Citation:

HUANG Tian-jiao, ZHANG Ya-ping, ZHUANG Ke, LU bin, ZHU Yi-wen, SHEN Kai. Preparation of honeycombed holmium-modified Fe-Mn/TiO₂ catalyst and its performance in the low temperature selective catalytic reduction of NO_x[J]. Journal of Fuel Chemistry and Technology, 2018, 46(3): 319-327.

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Preparation of honeycombed holmium-modified Fe-Mn/TiO₂ catalyst and its performance in the low temperature selective catalytic reduction of NO_x

1.
Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, China
2.
State Power Environmental Protection Research Institute, Nanjing 210031, China

Funds:

The project was Supported by the Key Research Program of Jiangsu Province BE2015677

Environmental Nonprofit Industry Research Subject 2016YFC0208102

National Key R&D Plan 2017YFB0603201

More Information

Corresponding author: ZHANG Ya-ping, Tel: 025-83790667，E-mail: amflora@seu.edu.cn
Received Date: 2017-09-13
Rev Recd Date: 2017-12-11

Available Online: 2021-01-23

Publish Date: 2018-03-10

Abstract

Abstract

A series of honeycombed holmium-modified Fe-Mn/TiO₂ catalysts were prepared by moulding method and their performance in the low temperature selective catalytic reduction (SCR) of NO_x was investigated. The forming process was optimized as:the mass content of water in the forming additives is 40%, in which 10% structure strengthening agent (glass fiber), 5% binder (carboxymethyl cellulose), 10% squeezing agent (glycerin), 5% pore-forming agent (activated carbon) and a little lubricants (liquid paraffin) are added. The honeycombed Fe-Ho-Mn/TiO₂ catalyst prepared under these conditions exhibits excellent performance in the low-temperature SCR of NO_x; the conversion of NO_x exceeds 90% at 120℃ and a good resistance to SO₂ and H₂O is observed when the content of SO₂ in the stream is lower than 0.02%. The characterization results indicated that in comparison with the parent powder holmium-modified Fe-Ho-Mn/TiO₂ catalyst, the honeycombed catalyst exhibits lower surface area, more particle aggregation, and less acid sites and Mn⁴⁺ species on the surface, which has a certain negative influence on the catalytic performance of Fe-Ho-Mn/TiO₂.
- holmium,
- selective catalytic reduction,
- de-NO_x,
- low temperature,
- honeycombed,
- forming

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References(38)

References

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