Selective catalytic reduction of NOx on V2O5-CuO/TiO2 catalyst at middle-low temperature

CHEN Zhi-hang; YAN Ping; TANG Zhi-xiong; CEN Chao-ping; CHEN Ding-sheng; FANG Ping; LUO Jian-zhong

Volume 40 Issue 04

Apr. 2012

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Article Navigation > Journal of Fuel Chemistry and Technology > 2012 > (04): 469-474

CHEN Zhi-hang, YAN Ping, TANG Zhi-xiong, CEN Chao-ping, CHEN Ding-sheng, FANG Ping, LUO Jian-zhong. Selective catalytic reduction of NOx on V2O5-CuO/TiO2 catalyst at middle-low temperature[J]. Journal of Fuel Chemistry and Technology, 2012, (04): 469-474.

Citation:

CHEN Zhi-hang, YAN Ping, TANG Zhi-xiong, CEN Chao-ping, CHEN Ding-sheng, FANG Ping, LUO Jian-zhong. Selective catalytic reduction of NO_x on V₂O₅-CuO/TiO₂ catalyst at middle-low temperature[J]. Journal of Fuel Chemistry and Technology, 2012, (04): 469-474.

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Selective catalytic reduction of NO_x on V₂O₅-CuO/TiO₂ catalyst at middle-low temperature

1.
South China Institute of Environmental Science, Ministry of Environmental Protection, Guangzhou 510655, China;
2.
Faculty of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China

Received Date: 2011-03-11
Rev Recd Date: 2011-07-02
Publish Date: 2012-04-30

Abstract

Abstract

In this paper, a series of TiO₂ supported vanadium pentoxide and copper oxide catalysts were prepared by the impregnation method for selective catalytic reduction of NO_x with NH₃ at middle-low temperature (200~300℃). The catalysts were characterized by BET and X-ray diffraction (XRD). The results showed that 2V16Cu/TiO₂ calcinated at 500℃ exhibited the best catalytic activity at middle-low temperature and quite wide temperature window. A 97.3% NO_x conversion was obtained at 225℃ and a gross hourly space velocity (GHSV) of 6.0×10⁴h^-1, and it reached 100% at 250~300℃. XRD results showed that the characteristic peak of CuO gradually emerged with the increase of CuO loading. CuO was the key active component of the VCu/TiO₂ catalysts, and affected the catalytic activity at middle-low temperature significantly. The BET results showed that the CuO loading had great influence on surface structure of vanadium-titanium catalyst. The test of sulfur resistance performance showed that 2V16Cu/TiO₂ which was prepared by the introduction of vanadium pentoxide improved its sulfur resistance performance slightly.
- vanadium-copper mixed-oxide,
- selective catalytic reduction,
- middle-low temperature,
- nitrogen oxide,
- ammonia

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