Experimental study on the selective catalytic reduction of NO with C3H6 over Co/Fe/Al2O3/cordierite catalysts

LIU Xin; SU Ya-xin; DONG Shi-lin; ZHOU Hao; DENG Wen-yi; ZHAO Bing-tao

Volume 46 Issue 6

Jun. 2018

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Article Navigation > Journal of Fuel Chemistry and Technology > 2018 > 46(6): 743-753

LIU Xin, SU Ya-xin, DONG Shi-lin, ZHOU Hao, DENG Wen-yi, ZHAO Bing-tao. Experimental study on the selective catalytic reduction of NO with C3H6 over Co/Fe/Al2O3/cordierite catalysts[J]. Journal of Fuel Chemistry and Technology, 2018, 46(6): 743-753.

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LIU Xin, SU Ya-xin, DONG Shi-lin, ZHOU Hao, DENG Wen-yi, ZHAO Bing-tao. Experimental study on the selective catalytic reduction of NO with C₃H₆ over Co/Fe/Al₂O₃/cordierite catalysts[J]. Journal of Fuel Chemistry and Technology, 2018, 46(6): 743-753.

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Experimental study on the selective catalytic reduction of NO with C₃H₆ over Co/Fe/Al₂O₃/cordierite catalysts

1.
School of Environmental Science and Engineering, Donghua University, Shanghai 201620, China
2.
Changzhou Vocational Institute of Engineering, Changzhou 213164, China
3.
School of Energy and Power Engineering, University of Shanghai Science and Technology, Shanghai 200093, China

Funds:

the National Natural Science Foundation of China 51278095

Jiangsu Province Prospective Joint Research Projects BY2015032-02

Natural Science Foundation of Shanghai 17ZR1419300

More Information

Corresponding author: SU Ya-xin, Tel: 021-67792552, E-mail: suyx@dhu.edu.cn
Received Date: 2018-03-07
Rev Recd Date: 2018-04-02

Available Online: 2021-01-23

Publish Date: 2018-06-10

Abstract

Abstract

The Co/Fe/Al₂O₃/cordierite catalysts with different Co loadings were prepared by sol-gel and impregnation methods, and their performance in the selective catalytic reduction of NO with C₃H₆ over catalytic were experimentally studied in a ceramic tubular reactor. The results indicated that 1.5Co/Fe/Al₂O₃/cordierite showed the highest C₃H₆-SCR activity with 97% NO reduction in the simulated flue gas at 550 ℃. Cobalt was able to effectively improve the ability of Fe/Al₂O₃/cordierite catalysts to resist SO₂ and H₂O in flue gas. When 0.02% SO₂ and 3% water vapor were added to the simulated flue gas, the NO reduction efficiency of 1.5Co/Fe/Al₂O₃/cordierite was almost unaffected, the NO reduction by 1.5Co/Fe/Al₂O₃/cordierite with C₃H₆ all surpassed 90%. In contrast, the catalytic activity of Fe/Al₂O₃/cordierite without cobalt modification was seriously suppressed by SO₂ and H₂O, the highest NO reduction efficiency of Fe/Al₂O₃/cordierite was less than 50% within the entire reaction temperature range (200-700 ℃).XRD and SEM results showed that the surface of 1.5Co/Fe/Al₂O₃/cordierite after the modification by cobalt became loose, and formed by the cobalt iron and cobalt aluminum metal oxide-based spherical grains.H₂-TPR results showed that 1.5Co/Fe/Al₂O₃/cordierite had better low temperature reduction performance than Fe/Al₂O₃/cordierite. Py-FTIR results confirmed that Co can dramatically increased the Lewis acid and produced Brønsted acid on the catalyst surface. N₂ adsorption/desorption characterization results proved that Co can increase the specific surface area of the catalyst.
- selective catalytic reduction of NO,
- Co/Fe/Al₂O₃/cordierite catalyst,
- NO,
- C₃H₆

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References(39)

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