Effect of Alkali Metal Deposition on Activity of De-NOx SCR Catalysts

Pei Qing Cao; Chang An Wang; Zhi Qiang Liu; Yong Bo Du; Yong Gang Zhao; Qiang Lv; Yang Bai; Lei Deng; De Fu Che

doi:10.4028/www.scientific.net/AMR.955-959.698

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 955-959Effect of Alkali Metal Deposition on Activity of...

Effect of Alkali Metal Deposition on Activity of De-NO_x SCR Catalysts

Abstract:

Zhundong coal has a huge proved reserve and many excellent properties. However, the alkali metal content in Zhundong coal is apparently high, which can accelerate the deactivation of De-NO_x SCR catalysts. In the present study, the effect of alkali metal deposition on activity of SCR catalysts through solution impregnation method was experimentally investigated. The results indicate that alkali metal deposition on the catalyst surface significantly deactivates the capacity of SCR catalysts. NaOH presents the most intense poisonousness. The catalytic effect on NO reduction reduces with the increase of alkali metal content on catalyst surfaces. In addition, potassium establishes more obvious poisonousness on SCR catalyst than sodium. There is interaction effect between sodium and potassium on deactivating the SCR catalyst.

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Periodical:

Advanced Materials Research (Volumes 955-959)

Pages:

698-701

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.955-959.698

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Online since:

June 2014

Authors:

Pei Qing Cao, Chang An Wang*, Zhi Qiang Liu, Yong Bo Du, Yong Gang Zhao, Qiang Lv, Yang Bai, Lei Deng, De Fu Che

Keywords:

Alkali Metal, Scr Catalyst, Solution Impregnation, Zhundong Coal

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