Effects of SO2 Treatment of Commercial Catalysts on Selective Catalytic Reduction of NOx by NH3

doi:10.1007/s40242-016-6080-z

Chemical Research in Chinese Universities ›› 2016, Vol. 32 ›› Issue (3): 414-417.doi: 10.1007/s40242-016-6080-z

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Effects of SO₂ Treatment of Commercial Catalysts on Selective Catalytic Reduction of NO_x by NH₃

HUANG Qinghua¹, SONG Liyun¹, HE Hong^1,2, QIU Wenge¹, SU Yaochao¹

1. Key Laboratory of Beijing on Regional Air Pollution Control, Beijing Key Laboratory for Green Catalysis and Separation, Beijing University of Technology, Beijing 100124, P. R. China;
2. Collaborative Innovation Center of Electric Vehicles in Beijing, Beijing 100081, P. R. China

Received:2016-03-07 Revised:2016-03-22 Online:2016-06-01 Published:2016-04-20
Contact: HE Hong E-mail:hehong@bjut.edu.cn
Supported by:
Supported by the National Natural Science Foundation of China(No.21277009) and the Education Commission Project of Beijing Municipality, China(No.TJSHG201310005003).

Abstract

Abstract:

Nitrogen oxide(NO_x) emitted from stationary and mobile sources is a major air pollutant. Selective catalytic reduction(SCR) of NO_x over a catalyst is a main technology for NO_x elimination. Catalysts used for practical applications would be deactivated in flue containing SO₂. In this work, three typical commercial catalysts were investigated before and after SO₂ treatment. The catalysts were characterized by X-ray diffraction(XRD), X-ray fluorescene(XRF), temperature programme reduction(TPR), temperature programme desorption(TPD) and diffuse reflectance Fourier transform infrared(DRIFT) techniques. Results showed that SO₂ treatment significantly influenced the performance of V₂O₅/TiO₂ catalyst. The amount of V₂O₅ in the catalyst primarily affected the accumulation of sulfur species in the SO₂atmosphere. The performance of catalysts with small amounts of V₂O₅ could be improved under the same experimental conditions for acidity enhancement.

Key words: Selective catalytic reduction, V₂O₅/TiO₂catalyst, SO₂ treatment

HUANG Qinghua, SONG Liyun, HE Hong, QIU Wenge, SU Yaochao. Effects of SO₂ Treatment of Commercial Catalysts on Selective Catalytic Reduction of NO_x by NH₃[J]. Chemical Research in Chinese Universities, 2016, 32(3): 414-417.

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Effects of SO₂ Treatment of Commercial Catalysts on Selective Catalytic Reduction of NO_x by NH₃

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