Effect of carrier on the performance of copper based catalyst for selective catalytic reduction of NO with NH<sub>3</sub> at low temperature

ZHANG Xiang-jun; LIU Xiao-gang; LI Qing-yong; LI Yan; WEI Bo; WANG Hong; LI Cui-qing; SONG Yong-ji

Volume 45 Issue 2

Feb. 2017

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Article Navigation > Journal of Fuel Chemistry and Technology > 2017 > 45(2): 220-226

ZHANG Xiang-jun, LIU Xiao-gang, LI Qing-yong, LI Yan, WEI Bo, WANG Hong, LI Cui-qing, SONG Yong-ji. Effect of carrier on the performance of copper based catalyst for selective catalytic reduction of NO with NH3 at low temperature[J]. Journal of Fuel Chemistry and Technology, 2017, 45(2): 220-226.

Citation:

ZHANG Xiang-jun, LIU Xiao-gang, LI Qing-yong, LI Yan, WEI Bo, WANG Hong, LI Cui-qing, SONG Yong-ji. Effect of carrier on the performance of copper based catalyst for selective catalytic reduction of NO with NH₃ at low temperature[J]. Journal of Fuel Chemistry and Technology, 2017, 45(2): 220-226.

Citation:

ZHANG Xiang-jun, LIU Xiao-gang, LI Qing-yong, LI Yan, WEI Bo, WANG Hong, LI Cui-qing, SONG Yong-ji. Effect of carrier on the performance of copper based catalyst for selective catalytic reduction of NO with NH₃ at low temperature[J]. Journal of Fuel Chemistry and Technology, 2017, 45(2): 220-226.

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Effect of carrier on the performance of copper based catalyst for selective catalytic reduction of NO with NH₃ at low temperature

1.
Beijing Key Laboratory of Clean Fuel and Advanced Catalytic Pollution Reduction Technology, Department Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China
2.
Department Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China

Funds:

National Natural Science Foundation of China 21343009, 21673290

the State Key Laboratory of Heavy Oil Processing SKLHOP201501

the National College Students Innovation and Entrepreneurship Training Program 2016J00073

Received Date: 2016-08-24
Rev Recd Date: 2016-11-22

Available Online: 2021-01-23

Publish Date: 2017-02-10

Abstract

Abstract

The catalysts of supported copper oxide were prepared by impregnation method, which were characterized by XRD, TG-MS, XPS, NO-TPD, NH₃-TPD and H₂-TPR and the effect of carrier on the performance of catalysts for the selective catalytic reduction of NO with NH₃ at low-temperature in the presence of oxygen was investigated.The results show that the copper species exist in the form of CuO and Cu₂O on carriers.The dispersion and oxidation state of copper species, the acidity and redox ability of the catalysts and the performance of adsorption/desorption are affected by the carriers.The Cu/HZSM-5 catalyst with highly dispersed copper speicies has excellent redox properties, suitable acidity and acid capacity, and good adsorption/desorption performance for reactants, which shows a good catalytic activity in the NH₃-SCR denitrification reaction.The reaction temperature is lower, T₅₀ and T₉₀ is 137 and 165℃, respectively, and the active window temperature is wide.The temperature range for the NO conversion of over 90% is 165-358℃.
- carrier,
- copper oxide,
- NH₃-SCR,
- low-temperature denitrification

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References(34)

References

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