Effect of Steam-Treated Zeolite BEA Catalyst in NH3-SCR Reaction 


Vol. 26,  No. 2, pp. 145-150, Jun.  2020
10.7464/ksct.2020.26.2.145


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  Abstract

Nitrous oxide (N2O) is one of the six greenhouse gases, and it is essential to reduce N2O by showing a global warming potential (GWP) equivalent to 310 times that of carbon dioxide (CO2). Selective catalytic reduction (SCR) is a technology that converts ammonia into harmless N2 and H2O by using ammonia as a reducing agent to remove NOx, one of the air pollutants; the process also produces high denitrification efficiency. In this study, the Fe-BEA catalyst was steam-treated at 100 ℃ for 2 h before Fe ion exchange in the fixed bed reactor in order to investigate the effect of the steam-treated Fe-BEA catalyst on the NH3-SCR reaction. NH3-SCR reaction test of synthesized catalysts was performed at WHSV = 180 h-1, 370 to 400 ℃ in the fixed bed reactor. The Fe-BEA(100) catalyst steam-treated at 100 ℃ showed a somewhat higher activity than the Fe-BEA catalyst at 370 to 390 ℃. The catalysts were characterized by BET, ICP, NH3-TPD, H2-TPR, and 27Al MAS NMR in order to determine the cause affecting NH3-SCR activity. The H2-TPR result confirmed that the Fe-BEA(100) catalyst had a higher reduction of isolated Fe3+ than the Fe-BEA catalyst, and that the steam treatment increased the amount of isolated Fe3+ as an active species, thus increasing the activity.

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  Cite this article

[IEEE Style]

P. JH, H. GH, H. RH, B. JH, Y. KB, "Effect of Steam-Treated Zeolite BEA Catalyst in NH3-SCR Reaction," Clean Technology, vol. 26, no. 2, pp. 145-150, 2020. DOI: 10.7464/ksct.2020.26.2.145.

[ACM Style]

Park JH, Hee GH, Hwang RH, Baek JH, and Yi KB. 2020. Effect of Steam-Treated Zeolite BEA Catalyst in NH3-SCR Reaction. Clean Technology, 26, 2, (2020), 145-150. DOI: 10.7464/ksct.2020.26.2.145.

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pISSN : 1598 - 9712
eISSN : 2288 - 0690

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