Effects of manganese oxide impregnation and flue gas conditions on simultaneous control of Hg0 and NO from coal-fired utility flue gases using SCR catalysts

Sheng Hsuan Hsiao; Chun Hsiang Chiu; Hong Ping Lin; Shiao Shing Chen; Tien Chin Chang; Hsing Cheng Hsi

Effects of manganese oxide impregnation and flue gas conditions on simultaneous control of Hg⁰ and NO from coal-fired utility flue gases using SCR catalysts

Sheng Hsuan Hsiao, Chun Hsiang Chiu, Hong Ping Lin, Shiao Shing Chen, Tien Chin Chang, Hsing Cheng Hsi

Department of Chemistry

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

This research investigated the effects of manganese oxide (MnO_x) impregnation on the physical/chemical properties and simultaneous control of Hg⁰ and NO using a V₂O₅-WO₃/TiO₂-SiO₂ selective catalytic reduction (SCR) catalyst. Raw and MnO_x-treated SCR samples were bean-shaped nanoparticles with sizes of 10-30 nm. The decrease in surface area when the impregnated MnO_x amount was 10 wt% may stem from the particle growth or aggregation for SCR catalyst. Mn⁴⁺ was the main valence state of impregnated MnO_x. MnO_x impregnation enhanced the removal of Hg⁰, NO, and SO₂ with SCR catalyst. The 5 and 10% MnO_x-impregnated samples had the greatest multipollutant control potentials for removing Hg⁰ and NO; however, the increasing SO₂ removal that may be due to SO₂-SO₃ conversion should be concerned. HCl and O₂ greatly promoted Hg⁰ oxidation. SO₂ enhanced Hg⁰ oxidation at ≤200 ppm while NO and NH₃ consistently inhibited Hg⁰ oxidation. Elevating flue gas temperature enhanced Hg⁰ oxidation. Overall, MnO_x-impregnated catalyst shows stable and consistent multipollutant removal effectiveness.

Original language	English
Title of host publication	108th Air and Waste Management Association Annual Conference and Exhibition, ACE 2015 - Connecting the Dots
Subtitle of host publication	Environmental Quality to Climate
Publisher	Air and Waste Management Association
Pages	397-403
Number of pages	7
ISBN (Electronic)	9781510815582
Publication status	Published - 2015
Event	108th Air and Waste Management Association Annual Conference and Exhibition - Connecting the Dots: Environmental Quality to Climate, ACE 2015 - Raleigh, United States Duration: 2015 Jun 22 → 2015 Jun 25

Publication series

Name	Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA
Volume	1
ISSN (Print)	1052-6102

Other

Other	108th Air and Waste Management Association Annual Conference and Exhibition - Connecting the Dots: Environmental Quality to Climate, ACE 2015
Country/Territory	United States
City	Raleigh
Period	15-06-22 → 15-06-25

All Science Journal Classification (ASJC) codes

General Environmental Science
General Energy

Cite this

Hsiao, S. H., Chiu, C. H., Lin, H. P., Chen, S. S., Chang, T. C., & Hsi, H. C. (2015). Effects of manganese oxide impregnation and flue gas conditions on simultaneous control of Hg⁰ and NO from coal-fired utility flue gases using SCR catalysts. In 108th Air and Waste Management Association Annual Conference and Exhibition, ACE 2015 - Connecting the Dots: Environmental Quality to Climate (pp. 397-403). (Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA; Vol. 1). Air and Waste Management Association.

Hsiao, Sheng Hsuan ; Chiu, Chun Hsiang ; Lin, Hong Ping et al. / Effects of manganese oxide impregnation and flue gas conditions on simultaneous control of Hg⁰ and NO from coal-fired utility flue gases using SCR catalysts. 108th Air and Waste Management Association Annual Conference and Exhibition, ACE 2015 - Connecting the Dots: Environmental Quality to Climate. Air and Waste Management Association, 2015. pp. 397-403 (Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA).

@inproceedings{21359130928040ba91eab2db78df4418,

title = "Effects of manganese oxide impregnation and flue gas conditions on simultaneous control of Hg0 and NO from coal-fired utility flue gases using SCR catalysts",

abstract = "This research investigated the effects of manganese oxide (MnOx) impregnation on the physical/chemical properties and simultaneous control of Hg0 and NO using a V2O5-WO3/TiO2-SiO2 selective catalytic reduction (SCR) catalyst. Raw and MnOx-treated SCR samples were bean-shaped nanoparticles with sizes of 10-30 nm. The decrease in surface area when the impregnated MnOx amount was 10 wt% may stem from the particle growth or aggregation for SCR catalyst. Mn4+ was the main valence state of impregnated MnOx. MnOx impregnation enhanced the removal of Hg0, NO, and SO2 with SCR catalyst. The 5 and 10% MnOx-impregnated samples had the greatest multipollutant control potentials for removing Hg0 and NO; however, the increasing SO2 removal that may be due to SO2-SO3 conversion should be concerned. HCl and O2 greatly promoted Hg0 oxidation. SO2 enhanced Hg0 oxidation at ≤200 ppm while NO and NH3 consistently inhibited Hg0 oxidation. Elevating flue gas temperature enhanced Hg0 oxidation. Overall, MnOx-impregnated catalyst shows stable and consistent multipollutant removal effectiveness.",

author = "Hsiao, {Sheng Hsuan} and Chiu, {Chun Hsiang} and Lin, {Hong Ping} and Chen, {Shiao Shing} and Chang, {Tien Chin} and Hsi, {Hsing Cheng}",

note = "Funding Information: Financial supports by the Ministry of Science and Technology and the Environmental Protection Administration, Taiwan under grant nos. MOST100-2221-E-002-256-MY3 and 102-EPA-F-001-001 are appreciated. The opinions expressed in this paper are not necessarily those of the sponsors.; 108th Air and Waste Management Association Annual Conference and Exhibition - Connecting the Dots: Environmental Quality to Climate, ACE 2015 ; Conference date: 22-06-2015 Through 25-06-2015",

year = "2015",

language = "English",

series = "Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA",

publisher = "Air and Waste Management Association",

pages = "397--403",

booktitle = "108th Air and Waste Management Association Annual Conference and Exhibition, ACE 2015 - Connecting the Dots",

address = "United States",

}

Hsiao, SH, Chiu, CH, Lin, HP, Chen, SS, Chang, TC & Hsi, HC 2015, Effects of manganese oxide impregnation and flue gas conditions on simultaneous control of Hg⁰ and NO from coal-fired utility flue gases using SCR catalysts. in 108th Air and Waste Management Association Annual Conference and Exhibition, ACE 2015 - Connecting the Dots: Environmental Quality to Climate. Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA, vol. 1, Air and Waste Management Association, pp. 397-403, 108th Air and Waste Management Association Annual Conference and Exhibition - Connecting the Dots: Environmental Quality to Climate, ACE 2015, Raleigh, United States, 15-06-22.

Effects of manganese oxide impregnation and flue gas conditions on simultaneous control of Hg⁰ and NO from coal-fired utility flue gases using SCR catalysts. / Hsiao, Sheng Hsuan; Chiu, Chun Hsiang; Lin, Hong Ping et al.
108th Air and Waste Management Association Annual Conference and Exhibition, ACE 2015 - Connecting the Dots: Environmental Quality to Climate. Air and Waste Management Association, 2015. p. 397-403 (Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA; Vol. 1).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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T1 - Effects of manganese oxide impregnation and flue gas conditions on simultaneous control of Hg0 and NO from coal-fired utility flue gases using SCR catalysts

AU - Hsiao, Sheng Hsuan

AU - Chiu, Chun Hsiang

AU - Lin, Hong Ping

AU - Chen, Shiao Shing

AU - Chang, Tien Chin

AU - Hsi, Hsing Cheng

N1 - Funding Information: Financial supports by the Ministry of Science and Technology and the Environmental Protection Administration, Taiwan under grant nos. MOST100-2221-E-002-256-MY3 and 102-EPA-F-001-001 are appreciated. The opinions expressed in this paper are not necessarily those of the sponsors.

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Y1 - 2015

N2 - This research investigated the effects of manganese oxide (MnOx) impregnation on the physical/chemical properties and simultaneous control of Hg0 and NO using a V2O5-WO3/TiO2-SiO2 selective catalytic reduction (SCR) catalyst. Raw and MnOx-treated SCR samples were bean-shaped nanoparticles with sizes of 10-30 nm. The decrease in surface area when the impregnated MnOx amount was 10 wt% may stem from the particle growth or aggregation for SCR catalyst. Mn4+ was the main valence state of impregnated MnOx. MnOx impregnation enhanced the removal of Hg0, NO, and SO2 with SCR catalyst. The 5 and 10% MnOx-impregnated samples had the greatest multipollutant control potentials for removing Hg0 and NO; however, the increasing SO2 removal that may be due to SO2-SO3 conversion should be concerned. HCl and O2 greatly promoted Hg0 oxidation. SO2 enhanced Hg0 oxidation at ≤200 ppm while NO and NH3 consistently inhibited Hg0 oxidation. Elevating flue gas temperature enhanced Hg0 oxidation. Overall, MnOx-impregnated catalyst shows stable and consistent multipollutant removal effectiveness.

AB - This research investigated the effects of manganese oxide (MnOx) impregnation on the physical/chemical properties and simultaneous control of Hg0 and NO using a V2O5-WO3/TiO2-SiO2 selective catalytic reduction (SCR) catalyst. Raw and MnOx-treated SCR samples were bean-shaped nanoparticles with sizes of 10-30 nm. The decrease in surface area when the impregnated MnOx amount was 10 wt% may stem from the particle growth or aggregation for SCR catalyst. Mn4+ was the main valence state of impregnated MnOx. MnOx impregnation enhanced the removal of Hg0, NO, and SO2 with SCR catalyst. The 5 and 10% MnOx-impregnated samples had the greatest multipollutant control potentials for removing Hg0 and NO; however, the increasing SO2 removal that may be due to SO2-SO3 conversion should be concerned. HCl and O2 greatly promoted Hg0 oxidation. SO2 enhanced Hg0 oxidation at ≤200 ppm while NO and NH3 consistently inhibited Hg0 oxidation. Elevating flue gas temperature enhanced Hg0 oxidation. Overall, MnOx-impregnated catalyst shows stable and consistent multipollutant removal effectiveness.

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M3 - Conference contribution

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Hsiao SH, Chiu CH, Lin HP, Chen SS, Chang TC, Hsi HC. Effects of manganese oxide impregnation and flue gas conditions on simultaneous control of Hg⁰ and NO from coal-fired utility flue gases using SCR catalysts. In 108th Air and Waste Management Association Annual Conference and Exhibition, ACE 2015 - Connecting the Dots: Environmental Quality to Climate. Air and Waste Management Association. 2015. p. 397-403. (Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA).