The W Loading Effect on SCR deNOx Performance for V-W-Mo/TiO2 Catalyst

Ji Wei Peng; Tao Luan; Yan Gao

doi:10.4028/www.scientific.net/AMR.774-776.743

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 774-776The W Loading Effect on SCR deNOx Performance for...

The W Loading Effect on SCR deNO_x Performance for V-W-Mo/TiO₂ Catalyst

Abstract:

The SCR catalysts were produced with V₂O₅, WO₃, MoO₃ and anatase type TiO₂. The catalyst samples were ground and sieved for 0.3~0.6mm.The NO catalytic efficiency, selectivity against N₂O of the catalysts were investigated on a fixed bed reactor under simulated exhaust gas with a typical gas composition. The addition of W enhanced the catalytic efficiency of V(1)-W(x)-Mo (4.5)/TiO₂ catalysts at high temperature region, while lessened that at low temperature. Increasing the loading of W from 1.5% w/w to 4.5% w/w advanced the maximum catalytic efficiency from 88% to 99% and enlarged the temperature window of the catalyst. The presence of W promoted the N₂O generation. The V(1)-W(4.5)-Mo (4.5)/TiO₂ catalyst showed higher catalytic selectivity for NO compared to the catalysts loading W.

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Periodical:

Advanced Materials Research (Volumes 774-776)

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743-746

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.774-776.743

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September 2013

Authors:

Ji Wei Peng, Tao Luan, Yan Gao

Keywords:

N₂O, NH₃, NO, SCR, W

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