FTIR Studies on NO Adsorption on [Co+Mg(Sr)]/ZSM-5 |
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| Authors: | ZHU Chong-ye LEE C.W CHONG P.J |
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| Affiliation: | 1. Editorial Department of Journal of Fudan University, Fudan University, Shanghai 200433, P. R. China;
2. KRICT, Taejon 305-606, Korea |
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| Abstract: | The adsorption of NO on /ZSM-5 zeolites with different contents was studied by means of FTIR spectroscopy. The dominant NO species adsorbed on /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 /ZSM-5 showed a new band near 1 858 cm -1(w) attributable to the species of Co_3O_4-NO. It was found that zeolite /ZSM-5 exhibits superior performance characteristics for SCR of NO molecules, and is promising as a useful catalyst. The typical catalyst /ZSM-5 for SCR resulted from the collaboration of the metal alkalinity and the ionic radius of the metal(such as Mg or Sr). |
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| Keywords: | Infrared spectroscopy Nitric oxide Adsorption Mononitrosyl Dinitrosyl Cobalt oxide |
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