Study on the Mechanism of SCR NO by Mn-Ce/CNTs Catalyst at Low-Temperature

Qiao Wen Yang; Peng Fei Li; Bing Nan Ren; Ying Zhu; Dong Yao Xu

doi:10.4028/www.scientific.net/AMR.773.645

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 773Study on the Mechanism of SCR NO by Mn-Ce/CNTs...

Study on the Mechanism of SCR NO by Mn-Ce/CNTs Catalyst at Low-Temperature

Abstract:

The prepared Mn-Ce/CNTs catalyst was tested with Temperature-Programmed Desorption (TPD) in this experiment. The adsorption – desorption of NO, NH₃, O₂ on the surface of catalyst were studied and the mechanism of SCR was analyzed. The conclusions were as follows: NH₃was easily absorbed on the surface of Mn-Ce/CNTs catalyst for its significant competitive advantage; it can restrain the absorption of NO. The adsorption performance of NH₃on catalyst surface was far greater than NO. When NO, O₂adsorbed on the catalyst at the same time, the desorption amount of NO from catalyst significantly was less than the NO absorbed only. This shows that the O₂can promote the adsorption of NO on the catalyst in SCR system.

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Periodical:

Advanced Materials Research (Volume 773)

Pages:

645-648

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.773.645

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Online since:

September 2013

Authors:

Qiao Wen Yang, Peng Fei Li, Bing Nan Ren, Ying Zhu, Dong Yao Xu

Keywords:

Catalyst, Denitrification, Mechanism, SCR

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