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The Effect of Si/Al Ratio on Selective Catalytic Reduction of NOx with NH3 over Pt/Al-SBA-15

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Abstract:

The selective catalytic reduction of NOx with NH3 (NH3-SCR) was investigated over Pt catalysts supported on various supports such as alumina, ZSM-5, SBA-15, and Al-SBA-15 with different amounts of alumina. Among them, Pt catalysts supported on Al-SBA-15 showed the higher NOx conversion at low temperatures than those of others. These also showed high NOx conversions over a wide reaction temperature. As the Si/Al ratio in Al-SBA-15 decreased, the NH3-SCR activity increased. This was closely related to the amount of strongly-adsorbed NH3.

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Nanocomposites and Nanoporous Materials VIII View Preview

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Periodical:

Solid State Phenomena (Volume 135)

Pages:

61-64

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.135.61

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Online since:

February 2008

Authors:

Min Kang, Jae Hyun Park, Eun Duck Park, Ji Man Kim, Dae Jung Kim, Jae Eui Yie

Keywords:

AI-SBA-15, Aluminum Content, Low-Temperature, NH3-SCR, Pt

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© 2008 Trans Tech Publications Ltd. All Rights Reserved

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