Low temperature selective catalytic reduction of NOx with NH3 using perovskit-type oxide catalysts

Lishia Lai; Hsun-Ling Bai; Shawyi Yan; Jungnan Hsu

Low temperature selective catalytic reduction of NO_x with NH₃ using perovskit-type oxide catalysts

Lishia Lai^*, Hsun-Ling Bai, Shawyi Yan, Jungnan Hsu

^*Corresponding author for this work

Institute of Environmental Engineering

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

Abstract

A series of LaCo_xMn_(1-x) O₃ perovskite-type oxide catalysts were prepared and studied for the catalytic reduction of NO. The effect of different B-site substitution ratios on the catalyst physicochemical properties was studied by series of characterization techniques. The reactivity of perovskite-type mixed oxides catalyst for low temperature SCR of NO with NH₃ was investigated. LaCo_0.2Mn_0.8 O₃exhibited the best deNO_x activity among all tested samples, which yielded 95% NO conversion at 150°C and space velocity of 70,000/hr. The deNO_x activity decreased with increasing temperature in the range of 150°-350°C. For the perovskite catalysts, the chemical property seemed to be more important than the physical property. The amounts of adsorbed NH₃ and NO played a major role in the SCR reaction in the low temperature range. This is an abstract of a paper presented at the AWMA's 107th Annual Conference & Exhibition (Long Beach, CA 6/24-27/2014).

Original language	English
Title of host publication	107th Air and Waste Management Association Annual Conference and Exhibition, ACE 2014
Publisher	Air and Waste Management Association
Pages	498-503
Number of pages	6
ISBN (Electronic)	9781634397322
State	Published - 1 Jan 2014

Publication series

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

Keywords

Low temperature
Nitrogen oxides
Perovskite
Selective catalytic reduction

Cite this

Lai, L., Bai, H.-L., Yan, S., & Hsu, J. (2014). Low temperature selective catalytic reduction of NO_x with NH₃ using perovskit-type oxide catalysts. In 107th Air and Waste Management Association Annual Conference and Exhibition, ACE 2014 (pp. 498-503). (Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA; Vol. 1). Air and Waste Management Association.

Lai, Lishia ; Bai, Hsun-Ling ; Yan, Shawyi et al. / Low temperature selective catalytic reduction of NO_x with NH₃ using perovskit-type oxide catalysts. 107th Air and Waste Management Association Annual Conference and Exhibition, ACE 2014. Air and Waste Management Association, 2014. pp. 498-503 (Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA).

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title = "Low temperature selective catalytic reduction of NOx with NH3 using perovskit-type oxide catalysts",

abstract = "A series of LaCoxMn(1-x) O3 perovskite-type oxide catalysts were prepared and studied for the catalytic reduction of NO. The effect of different B-site substitution ratios on the catalyst physicochemical properties was studied by series of characterization techniques. The reactivity of perovskite-type mixed oxides catalyst for low temperature SCR of NO with NH3 was investigated. LaCo0.2Mn0.8 O3exhibited the best deNOx activity among all tested samples, which yielded 95% NO conversion at 150°C and space velocity of 70,000/hr. The deNOx activity decreased with increasing temperature in the range of 150°-350°C. For the perovskite catalysts, the chemical property seemed to be more important than the physical property. The amounts of adsorbed NH3 and NO played a major role in the SCR reaction in the low temperature range. This is an abstract of a paper presented at the AWMA's 107th Annual Conference & Exhibition (Long Beach, CA 6/24-27/2014).",

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Lai, L, Bai, H-L, Yan, S & Hsu, J 2014, Low temperature selective catalytic reduction of NO_x with NH₃ using perovskit-type oxide catalysts. in 107th Air and Waste Management Association Annual Conference and Exhibition, ACE 2014. Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA, vol. 1, Air and Waste Management Association, pp. 498-503.

Low temperature selective catalytic reduction of NO_x with NH₃ using perovskit-type oxide catalysts. / Lai, Lishia; Bai, Hsun-Ling; Yan, Shawyi et al.
107th Air and Waste Management Association Annual Conference and Exhibition, ACE 2014. Air and Waste Management Association, 2014. p. 498-503 (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 › peer-review

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T1 - Low temperature selective catalytic reduction of NOx with NH3 using perovskit-type oxide catalysts

AU - Lai, Lishia

AU - Bai, Hsun-Ling

AU - Yan, Shawyi

AU - Hsu, Jungnan

PY - 2014/1/1

Y1 - 2014/1/1

N2 - A series of LaCoxMn(1-x) O3 perovskite-type oxide catalysts were prepared and studied for the catalytic reduction of NO. The effect of different B-site substitution ratios on the catalyst physicochemical properties was studied by series of characterization techniques. The reactivity of perovskite-type mixed oxides catalyst for low temperature SCR of NO with NH3 was investigated. LaCo0.2Mn0.8 O3exhibited the best deNOx activity among all tested samples, which yielded 95% NO conversion at 150°C and space velocity of 70,000/hr. The deNOx activity decreased with increasing temperature in the range of 150°-350°C. For the perovskite catalysts, the chemical property seemed to be more important than the physical property. The amounts of adsorbed NH3 and NO played a major role in the SCR reaction in the low temperature range. This is an abstract of a paper presented at the AWMA's 107th Annual Conference & Exhibition (Long Beach, CA 6/24-27/2014).

AB - A series of LaCoxMn(1-x) O3 perovskite-type oxide catalysts were prepared and studied for the catalytic reduction of NO. The effect of different B-site substitution ratios on the catalyst physicochemical properties was studied by series of characterization techniques. The reactivity of perovskite-type mixed oxides catalyst for low temperature SCR of NO with NH3 was investigated. LaCo0.2Mn0.8 O3exhibited the best deNOx activity among all tested samples, which yielded 95% NO conversion at 150°C and space velocity of 70,000/hr. The deNOx activity decreased with increasing temperature in the range of 150°-350°C. For the perovskite catalysts, the chemical property seemed to be more important than the physical property. The amounts of adsorbed NH3 and NO played a major role in the SCR reaction in the low temperature range. This is an abstract of a paper presented at the AWMA's 107th Annual Conference & Exhibition (Long Beach, CA 6/24-27/2014).

KW - Low temperature

KW - Nitrogen oxides

KW - Perovskite

KW - Selective catalytic reduction

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T3 - Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA

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BT - 107th Air and Waste Management Association Annual Conference and Exhibition, ACE 2014

PB - Air and Waste Management Association

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Lai L, Bai HL, Yan S, Hsu J. Low temperature selective catalytic reduction of NO_x with NH₃ using perovskit-type oxide catalysts. In 107th Air and Waste Management Association Annual Conference and Exhibition, ACE 2014. Air and Waste Management Association. 2014. p. 498-503. (Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA).

Low temperature selective catalytic reduction of NO_x with NH₃ using perovskit-type oxide catalysts

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