FTIR Studies on NO Adsorption on [Co+Mg(Sr)]/ZSM-5

Chemical Research in Chinese Universities ›› 2002, Vol. 18 ›› Issue (4): 389-392.

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FTIR Studies on NO Adsorption on [Co+Mg(Sr)]/ZSM-5

ZHU Chong-ye¹, LEE C. W.², CHONG P. J.²

1. Editorial Department of Journal of Fudan University, Fudan University, Shanghai 200433, P. R. China;
2. KRICT, Taejon 305-606, Korea

Received:2001-08-23 Online:2002-12-24 Published:2011-08-04
Supported by:
Supported by Korea Research Institute of Chemical Technology Foundation.

Abstract

Abstract: The adsorption of NO on [Co+Mg(Sr)]/ZSM-5 zeolites with different [Co+Mg(Sr)] contents was studied by means of FTIR spectroscopy. The dominant NO species adsorbed on [Co+Mg(Sr)]/ZSM-5 was found to be in a dinitrosyl form, as demonstrated by the IR bands at 1 813 and 1 896 cm^-1. NO was adsorbed in a mononitrosyl form as shown in the region of 1 937-1 939 cm^-1 as a minor species. Samples [Co+Mg(Sr)]/ZSM-5 showed a new band near 1 858 cm^-1(w) attributable to the species of Co₃O₄-NO. It was found that zeolite [Co+Mg(Sr)]/ZSM-5 exhibits superior performance characteristics for SCR of NO molecules, and is promising as a useful catalyst. The typical catalyst [Co+Mg(Sr)]/ZSM-5 for SCR resulted from the collaboration of the metal alkalinity and the ionic radius of the metal(such as Mg or Sr).

Key words: Infrared spectroscopy, Nitric oxide, Adsorption, Mononitrosyl, Dinitrosyl, Cobalt oxide

ZHU Chong-ye, LEE C. W., CHONG P. J.. FTIR Studies on NO Adsorption on [Co+Mg(Sr)]/ZSM-5[J]. Chemical Research in Chinese Universities, 2002, 18(4): 389-392.

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FTIR Studies on NO Adsorption on [Co+Mg(Sr)]/ZSM-5

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