NOx selective catalytic reduction by ammonia over Cu-ETS-10 catalysts

doi:10.1016/S1872-2067(14)60035-8

Abstract

Abstract:

Ion exchange method was used to fabricate Cu-ETS-10 titanosilicate catalysts, which possessed high activity, N₂ selectivity and SO₂ resistance for NO_x selective catalytic reduction (SCR). N₂ sorption measurements indicated that the microporous catalysts had high surface areas of 288-380 m²/g. The Cu content and speciation were investigated by inductively coupled plasma atomic emission spectrometry, H₂ temperature-programmed reduction, and diffuse reflectance infrared Fourier transform spectroscopy. Various Cu species coexisted within the catalyst. Isolated Cu²⁺ species were the active sites for NH₃-SCR, the number of which initially increased and then decreased with increasing Cu content. The catalytic activity of Cu-ETS-10 depended on the isolated Cu²⁺ species content.

Key words: Titanosilicate, Copper, Nitrogen oxide, Ammonia, Selective catalytic reduction

Liyun Song, Zongcheng Zhan, Xiaojun Liu, Hong He, Wenge Qiu, Xuehong Zi. NO_x selective catalytic reduction by ammonia over Cu-ETS-10 catalysts[J]. Chinese Journal of Catalysis, 2014, 35(7): 1030-1035.

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URL: https://www.cjcatal.com/EN/10.1016/S1872-2067(14)60035-8

https://www.cjcatal.com/EN/Y2014/V35/I7/1030

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NO_x selective catalytic reduction by ammonia over Cu-ETS-10 catalysts

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