Aluminum distribution in high-silica mordenite
Journal of Porous Materials 14 巻 1 号
89-96 頁
2007-03 発行
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| ファイル情報(添付) | |
| タイトル ( eng ) |
Aluminum distribution in high-silica mordenite
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| 作成者 |
Lu Baowang
Kanai Takahide
Oumi Yasunori
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| 収録物名 |
Journal of Porous Materials
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| 巻 | 14 |
| 号 | 1 |
| 開始ページ | 89 |
| 終了ページ | 96 |
| 抄録 |
The Al distribution in high-silica MOR zeolites with various Si/Al ratios was investigated by FT-IR spectroscopy in the presence of CD3CN probe molecules and benzene adsorption. Two adsorption bands assigned to CN stretching vibration were observed at 2280-2295 and ≈ 2315 cm-1, which are due to interaction of CN with acidic hydroxyl groups in the main channels and the side pockets of H-MOR zeolite, respectively. The relative intensity of the peak at 2315 cm-1 increased with an increase in the Si/Al ratio, indicating that the proportion of Al atoms in the main channels relatively decreased with the Si/Al ratio. This was confirmed from the linear relationship between the number of benzene molecules adsorbed in a unit cell and the number of Al atoms in the main channels. In addition, this was also suggested from the computer simulation result that Al atoms are preferentially sitting in the T3 site.
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| 著者キーワード |
Mordenite
Main channel
Side pocket
Al distribution
Acetonitrile
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| NDC分類 |
化学 [ 430 ]
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| 言語 |
英語
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| 資源タイプ | 学術雑誌論文 |
| 出版者 |
Springer
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| 発行日 | 2007-03 |
| 権利情報 |
Copyright (c) 2007 Springer "The original publication is available at www.springerlin.com"
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| 出版タイプ | Author’s Original（十分な品質であるとして、著者から正式な査読に提出される版） |
| アクセス権 | オープンアクセス |
| 収録物識別子 |
[ISSN] 1380-2224
[DOI] 10.1007/s10934-006-9012-3
[NCID] AA11053751
[DOI] http://dx.doi.org/10.1007/s10934-006-9012-3
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