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Selective catalytic reduction of NO under ambient conditions using ammonia as reducing agent and MFI zeolites as catalysts |
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| Authors: | D Roberge Anuj Raj S Kaliaguine D Trong On S Iwamoto T Inui |
| Affiliation: | aDe´partement de Ge´nie Chimique, Universite´Laval, Ste. Foy, Que´bec ,CanadaG1K 7P4 bDepartment of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Sakyo-Ku, Kyoto 606-01, Japan |
| Abstract: | Ambient temperature SCR of NO was studied over Ti, V and B silicalite-1, silicalite-1 and H-ZSM-5 catalysts. It was observed that even at 0°C silicalite-1 possesses some activity which falls off sharply with increasing temperature. An enhanced activity could be correlated to the titanium content in the Ti and Ti&z.sbnd;V silicalite samples. H-ZSM-5 and H-BS-1 show an unusually high transient activity probably due to weakly adsorbed ammonia species. These would not be adsorbed at higher temperature thus explaining the decreased activity as temperature is raised. Indeed with these catalysts no transient high activity was observed when the reaction was carried out at decreasing temperatures. |
| Keywords: | TS-1 VS-1 VTS-1 Silicalite-1 H-BS-1 H-ZSM-5 Nitrogen monoxide Selective reduction Low temperature SCR |
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