粉煤灰负载锰基催化剂低温脱硝活性及水硫抗性的实验研究

Xiaoxu Duan; Jinxiao Dou; Aoran Wei; Yongqi Zhao; Jianglong Yu

doi:10.13334/j.0258-8013.pcsee.210977

粉煤灰负载锰基催化剂低温脱硝活性及水硫抗性的实验研究

Translated title of the contribution: Experimental study of Mn-based catalysts supported on coal fly ash for selective catalytic reduction of NO_x and their resistance to SO₂/H₂O at low-temperatures

Xiaoxu Duan, Jinxiao Dou, Aoran Wei, Yongqi Zhao, Jianglong Yu

Research output: Contribution to journal › Conference article › Other

1 Citation (Scopus)

Abstract

Mn-Fe/FA(N) and Mn-Fe/FA catalysts were synthesized by using the ultrasonic-assisted precipitation method. These catalysts consisted of fly ash (as the carrier), Fe (ferric nitrate as the precursor) and Mn (manganese nitrate or potassium permanganate as the precursor). The NH₃-SCR reactions were conducted in a specially designed fixed-bed reactor. The de-NO_x and the resistance (SO₂ and H₂O) mechanism of catalysts were analyzed by X-ray photoelectron spectroscopy (XPS), NH₃-temperature programmed desorption (NH₃-TPD) and H₂-temperature programmed reduction (H₂-TPR). The results showed that the NO_x conversion of Mn-Fe/FA was significantly higher than that of Mn-Fe/FA(N). The Mn-Fe/FA catalyst exhibited a wider operating temperature range (70~200℃). Moreover, Mn-Fe/FA catalyst maintained the initial NO_x conversion (99%) for 4h in the H₂O (5 or 10%) at 200℃. In the presence of SO₂ and H₂O at 200°C, Mn-Fe/FA was able to maintain over 75% NO_x conversion after 4h. KMnO₄, as a source of Mn in Mn-Fe/FA, promoted the redox properties of the corresponding catalyst and increased the concentrations of active metal ions (Mn⁴⁺, Fe³⁺) and chemically adsorbed oxygen. It was found that using KMnO₄ as a source of Mn can inhibit the formation of metal sulfates.

Translated title of the contribution	Experimental study of Mn-based catalysts supported on coal fly ash for selective catalytic reduction of NO_x and their resistance to SO₂/H₂O at low-temperatures
Original language	Mandarin
Pages (from-to)	4102-4111
Number of pages	10
Journal	Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering
Volume	42
Issue number	11
DOIs	https://doi.org/10.13334/j.0258-8013.pcsee.210977
Publication status	Published - 2022
Externally published	Yes
Event	Chinese Society for Electrical Engineering 2022 - Sanya, China Duration: 25 Feb 2022 → 27 Feb 2022 https://web.archive.org/web/20220103120430/http://www.csee.net/

Keywords

Fly ash
Low-temperature de-NO
Mn-based catalysts
NH-SCR

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10.13334/j.0258-8013.pcsee.210977

Cite this

@article{1dee9a938f594b17ab2aebce3e0a01d8,

title = "粉煤灰负载锰基催化剂低温脱硝活性及水硫抗性的实验研究",

abstract = "Mn-Fe/FA(N) and Mn-Fe/FA catalysts were synthesized by using the ultrasonic-assisted precipitation method. These catalysts consisted of fly ash (as the carrier), Fe (ferric nitrate as the precursor) and Mn (manganese nitrate or potassium permanganate as the precursor). The NH3-SCR reactions were conducted in a specially designed fixed-bed reactor. The de-NOx and the resistance (SO2 and H2O) mechanism of catalysts were analyzed by X-ray photoelectron spectroscopy (XPS), NH3-temperature programmed desorption (NH3-TPD) and H2-temperature programmed reduction (H2-TPR). The results showed that the NOx conversion of Mn-Fe/FA was significantly higher than that of Mn-Fe/FA(N). The Mn-Fe/FA catalyst exhibited a wider operating temperature range (70~200℃). Moreover, Mn-Fe/FA catalyst maintained the initial NOx conversion (99%) for 4h in the H2O (5 or 10%) at 200℃. In the presence of SO2 and H2O at 200°C, Mn-Fe/FA was able to maintain over 75% NOx conversion after 4h. KMnO4, as a source of Mn in Mn-Fe/FA, promoted the redox properties of the corresponding catalyst and increased the concentrations of active metal ions (Mn4+, Fe3+) and chemically adsorbed oxygen. It was found that using KMnO4 as a source of Mn can inhibit the formation of metal sulfates.",

keywords = "Fly ash, Low-temperature de-NO, Mn-based catalysts, NH-SCR",

author = "Xiaoxu Duan and Jinxiao Dou and Aoran Wei and Yongqi Zhao and Jianglong Yu",

note = "Funding Information: 基金项目：辽宁省教育厅优秀青年培育项目(2020LNQN21)；辽宁省高等学校国(境)外培养项目(2018LNGXGJWPY-YB010)；辽宁省科技厅重点研发计划指导项目(2017308008)。 Education Department Excellent Talents Training Program of Liaoning Province (2020LNQN21); Universities Overseas Training Project of Liaoning Province (2018LNGXGJWPY-YB010); Key R & D Funding Scheme of Liaoning Province, China (2017308008). Publisher Copyright: {\textcopyright} 2022 Chin. Soc. for Elec. Eng.; Chinese Society for Electrical Engineering 2022 ; Conference date: 25-02-2022 Through 27-02-2022",

year = "2022",

doi = "10.13334/j.0258-8013.pcsee.210977",

language = "Mandarin",

volume = "42",

pages = "4102--4111",

journal = "Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering",

issn = "0258-8013",

publisher = "China Electric Power Research Institute",

number = "11",

url = "https://web.archive.org/web/20220103120430/http://www.csee.net/",

}

TY - JOUR

T1 - 粉煤灰负载锰基催化剂低温脱硝活性及水硫抗性的实验研究

AU - Duan, Xiaoxu

AU - Dou, Jinxiao

AU - Wei, Aoran

AU - Zhao, Yongqi

AU - Yu, Jianglong

N1 - Funding Information: 基金项目：辽宁省教育厅优秀青年培育项目(2020LNQN21)；辽宁省高等学校国(境)外培养项目(2018LNGXGJWPY-YB010)；辽宁省科技厅重点研发计划指导项目(2017308008)。 Education Department Excellent Talents Training Program of Liaoning Province (2020LNQN21); Universities Overseas Training Project of Liaoning Province (2018LNGXGJWPY-YB010); Key R & D Funding Scheme of Liaoning Province, China (2017308008). Publisher Copyright: © 2022 Chin. Soc. for Elec. Eng.

PY - 2022

Y1 - 2022

N2 - Mn-Fe/FA(N) and Mn-Fe/FA catalysts were synthesized by using the ultrasonic-assisted precipitation method. These catalysts consisted of fly ash (as the carrier), Fe (ferric nitrate as the precursor) and Mn (manganese nitrate or potassium permanganate as the precursor). The NH3-SCR reactions were conducted in a specially designed fixed-bed reactor. The de-NOx and the resistance (SO2 and H2O) mechanism of catalysts were analyzed by X-ray photoelectron spectroscopy (XPS), NH3-temperature programmed desorption (NH3-TPD) and H2-temperature programmed reduction (H2-TPR). The results showed that the NOx conversion of Mn-Fe/FA was significantly higher than that of Mn-Fe/FA(N). The Mn-Fe/FA catalyst exhibited a wider operating temperature range (70~200℃). Moreover, Mn-Fe/FA catalyst maintained the initial NOx conversion (99%) for 4h in the H2O (5 or 10%) at 200℃. In the presence of SO2 and H2O at 200°C, Mn-Fe/FA was able to maintain over 75% NOx conversion after 4h. KMnO4, as a source of Mn in Mn-Fe/FA, promoted the redox properties of the corresponding catalyst and increased the concentrations of active metal ions (Mn4+, Fe3+) and chemically adsorbed oxygen. It was found that using KMnO4 as a source of Mn can inhibit the formation of metal sulfates.

AB - Mn-Fe/FA(N) and Mn-Fe/FA catalysts were synthesized by using the ultrasonic-assisted precipitation method. These catalysts consisted of fly ash (as the carrier), Fe (ferric nitrate as the precursor) and Mn (manganese nitrate or potassium permanganate as the precursor). The NH3-SCR reactions were conducted in a specially designed fixed-bed reactor. The de-NOx and the resistance (SO2 and H2O) mechanism of catalysts were analyzed by X-ray photoelectron spectroscopy (XPS), NH3-temperature programmed desorption (NH3-TPD) and H2-temperature programmed reduction (H2-TPR). The results showed that the NOx conversion of Mn-Fe/FA was significantly higher than that of Mn-Fe/FA(N). The Mn-Fe/FA catalyst exhibited a wider operating temperature range (70~200℃). Moreover, Mn-Fe/FA catalyst maintained the initial NOx conversion (99%) for 4h in the H2O (5 or 10%) at 200℃. In the presence of SO2 and H2O at 200°C, Mn-Fe/FA was able to maintain over 75% NOx conversion after 4h. KMnO4, as a source of Mn in Mn-Fe/FA, promoted the redox properties of the corresponding catalyst and increased the concentrations of active metal ions (Mn4+, Fe3+) and chemically adsorbed oxygen. It was found that using KMnO4 as a source of Mn can inhibit the formation of metal sulfates.

KW - Fly ash

KW - Low-temperature de-NO

KW - Mn-based catalysts

KW - NH-SCR

UR - http://www.scopus.com/inward/record.url?scp=85131219853&partnerID=8YFLogxK

U2 - 10.13334/j.0258-8013.pcsee.210977

DO - 10.13334/j.0258-8013.pcsee.210977

M3 - Conference article

AN - SCOPUS:85131219853

SN - 0258-8013

VL - 42

SP - 4102

EP - 4111

JO - Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering

JF - Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering

IS - 11

T2 - Chinese Society for Electrical Engineering 2022

Y2 - 25 February 2022 through 27 February 2022

ER -

粉煤灰负载锰基催化剂低温脱硝活性及水硫抗性的实验研究

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Keywords

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