Evaluation of Cu-PPHs as active catalysts for the SCR process to control NO_x emissions from heavy duty diesel vehicles

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• 作者：Ramó ; n Moreno-Tost ; Mona Lisa Oliveira ; Dolores Eliche-Quesada ; José ; Jimé ; nez-Jimé ; nez ; Antonio Jimé ; nez-Ló ; pez ; Enrique Rodrí ; guez-Castelló ; n
• 关键词：SCR of NO ; Copper ; Ammonia ; ZSM-5 ; SO₂
• 刊名：Chemosphere
• 出版年：2008
• 出版时间：June 2008
• 年：2008
• 卷：72
• 期：4
• 页码：608-615
• 全文大小：236 K

文摘

Copper based catalysts supported on mesoporous materials, which were in turn based on a surfactant expanded zirconium phosphate for the formation of silica galleries in the interlayer space, were prepared by the impregnation method. They were then characterised and tested in the selective catalytic reduction of NO with ammonia as active catalysts for the control of the NO_x emissions from heavy duty vehicles. Copper catalysts displayed a high catalytic performance, even in the presence of 14 % (v/v) of H₂O and 100 ppm of SO₂. They also displayed improved catalytic behaviour when compared to a CuZSM5 catalyst.