1995年
Selective catalytic reduction of nitric oxide with ammonia on MFI-type ferrisilicate
Journal of the Chemical Society, Faraday Transactions
- ,
- ,
- 巻
- 91
- 号
- 18
- 開始ページ
- 3275
- 終了ページ
- 3279
- 記述言語
- 英語
- 掲載種別
- DOI
- 10.1039/FT9959103275
The catalytic properties of framework Fe3+ in MFI-type H-ferrisilicate for the selective reduction of nitric oxide with ammonia in the presence of oxygen have been investigated and compared with those of Fe-exchanged ZSM-5, iron oxide supported on silicalite and HZSM-5. H-ferrisilicate exhibited a high activity and selectivity for the reduction of nitric oxide into nitrogen. A side reaction, i.e. the oxidation of ammonia with oxygen into nitrogen, occurred only above 773 K. The activity and selectivity of Fe-exchanged ZSM-5 for the reduction of nitric oxide were comparable to those of H-ferrisilicate, while iron oxide supported on silicalite catalysed the oxidation of ammonia with oxygen into nitric oxide preferentially under the same reaction conditions. The catalytic activity of HZSM-5 for this reaction was much lower than that of H-ferrisilicate. Therefore, the framework Fe3+ ions in H-ferrisilicate are the active sites for the selective catalytic reduction of nitric oxide.
- リンク情報
- ID情報
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- DOI : 10.1039/FT9959103275
- ISSN : 0956-5000
- SCOPUS ID : 0000360107