Urea-SCR of NO over V2O5-WO3/TiO2/cordierite catalyst modified with Cu, Mn, Ce

DONG Guo-jun; LUO Xuan; YANG Zhi; LIANG Tao; ZHANG Wen-ping

Volume 40 Issue 05

May 2012

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Article Navigation > Journal of Fuel Chemistry and Technology > 2012 > 40(05): 608-614

DONG Guo-jun, LUO Xuan, YANG Zhi, LIANG Tao, ZHANG Wen-ping. Urea-SCR of NO over V2O5-WO3/TiO2/cordierite catalyst modified with Cu, Mn, Ce[J]. Journal of Fuel Chemistry and Technology, 2012, 40(05): 608-614.

Citation:

DONG Guo-jun, LUO Xuan, YANG Zhi, LIANG Tao, ZHANG Wen-ping. Urea-SCR of NO over V₂O₅-WO₃/TiO₂/cordierite catalyst modified with Cu, Mn, Ce[J]. Journal of Fuel Chemistry and Technology, 2012, 40(05): 608-614.

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Urea-SCR of NO over V₂O₅-WO₃/TiO₂/cordierite catalyst modified with Cu, Mn, Ce

1.
College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China;
2.
College of Power and Energy Engineering, Harbin Engineering University, Harbin 150001, China

Funds: 黑龙江省博士后基金(LRB07-233)。

Received Date: 2011-06-13
Rev Recd Date: 2011-09-26
Publish Date: 2012-05-31

Abstract

Abstract

The cordierite honeycomb ceramics (CC) was coated with Mn, Cu, Ce modified TiO₂, and W modified V₂O₅ in sequence by coating method. A series of monolith catalysts were evaluated at 120～550 ℃ for the selective catalytic reduction (SCR) of NO by urea. Compared to commercial catalyst V₂O₅-WO₃/TiO₂, the SCR performance was significantly improved between a wide temperature with the introduction of Mn, Cu, Ce. The results of characterization suggested that the activity improvement may be contributed to the suitable acidity and basicity of catalyst surface, the high ratio of V⁴⁺/V⁵⁺, the existence of anatase phase TiO₂ and the good redox capability of complex catalyst. This study provides a potential catalyst system for the removal of NO_x from diesel engines.
- Urea-SCR,
- nitrogen oxides,
- V₂O₅-WO₃/TiO₂,
- monolithic catalyst

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References(25)

References

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