On the activity and hydrothermal stability of CuMCM-22 in the decomposition of nitrogen oxides: a comparison with CuZSM-5

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• 作者：Palella ; Boris I. ; Pirone ; Raffaele ; Russo ; Gennaro ; Albuquerque ; Angela ; Pastore ; Heloise O. ; et. al.
• 关键词：N₂O decomposition ; CuMCM-22 ; CuZSM-5 ; Hydrothermal stability ; Steam-ageing ; FTIR CO adsorption
• 刊名：Catalysis Communications
• 出版年：2004
• 出版时间：April, 2004
• 年：2004
• 卷：5
• 期：4
• 页码：191-194
• 全文大小：221 K

文摘

A combined spectroscopic and catalytic study on the activity and hydrothermal stability of copper-exchanged MCM-22 and ZSM-5 zeolites is reported; CuMCM-22 is active in the decomposition of NO and N₂O also in the presence of water, whereas CuZSM-5 deactivates rapidly upon steaming. CO adsorption on fresh and steamed samples enlightened that the copper active species are more stable on CuMCM-22.