Novel promoting effects of tungsten on the selective catalytic reduction of NO by NH₃ over MnO_x¨CCeO₂ monolith catalyst

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• 作者：Qiulin Zhang^a ; Chuntian Qiu^a ; Haidi Xu^a ; Tao Lin ;   ; ^a ;   ; ^{nic7501@scu.edu.cn} ; Maochu Gong^a ; Yaoqiang Chen^a
• 关键词：Selective catalytic reduction ; Tungsten modified MnO_x&ndash ; CeO₂ ; Monolith catalyst ; NO reduction
• 刊名：Catalysis Communications
• 出版年：2011
• 出版时间：30 November 2011
• 年：2011
• 卷：16
• 期：1
• 页码：20-24
• 全文大小：997 K

文摘

A series of tungsten modified MnO_x¨CCeO₂ monolith catalysts were prepared and used for selective catalytic reduction (SCR) of NO by NH₃ in the presence of O₂. The experimental results showed that the SCR performance and SO₂-resistant ability of MnO_x¨CCeO₂ were greatly enhanced by the introduction of tungsten. The catalyst containing 10 % WO₃ showed the highest NO conversion in a wide temperature range of 162?74 ¡ãC. The highly dispersed or amorphous tungsten oxide and the strong interaction between tungsten and MnO_x¨CCeO₂ should be the reasons for the excellent performance of the catalyst containing 10 % WO_3.