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Recently, it has shown that silicon leaching can be also used to fabricate octadecasil nanocrystals (10¨C25 nm) with a high degree of intercrystalline porosity and a preserved structure. [ Last edited by hua56441 on 2011-2-16 at 16:30 ] |
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8814402
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Recently, it has shown that silicon leaching can be also used to fabricate octadecasil nanocrystals (10¨C25 nm) with a high degree of intercrystalline porosity and a preserved structure. ½üÀ´£¬ÒѾÓÐ×ÊÁÏÏÔʾ¹è½þ³öÒ²¿ÉÒÔÓÃÀ´ÖÆ×÷¾§¼ä¿×϶¶È¸ß¡¢½á¹¹Îȶ¨µÄoctadecasil ÄÉÃ×¾§Ìå (10¨C25 nm)¡£ |
5Â¥2011-02-16 17:01:36
8814402
ÖÁ×ðľ³æ (Ö°Òµ×÷¼Ò)
- ·ÒëEPI: 509
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2Â¥2011-02-16 16:31:44
|
As noted above, desilication mostly creates intracrystalline porosity in channel-type zeolites such as ZSM-5, ZSM-12, mordenite, and beta. Recently, it has shown that silicon leaching can be also used to fabricate octadecasil nanocrystals (10¨C25 nm) with a high degree of intercrystalline porosity and a preserved structure. 114 Clathrasils, i.e. zeolite-related materials consisting of window-connected cages, are impenetrable to typical sorbate molecules such as N2 or reactants such as hydrocarbons, and hence have no prospective for catalytic applications. The zero-dimensional character of these materials conditions the alkaline to operate in a different manner, as the cages cannot be accessed. Therefore, instead of attaining perforated crystals as in channel-type zeolites, clathrasil crystals are fragmented and peeled by the base, resulting in nanosized crystals. This widens the scope of these compounds, opening room for application as catalysts and/or catalyst supports |
3Â¥2011-02-16 16:38:36
8814402
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- ¹ó±ö: 0.381
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- ÔÚÏß: 357.8Сʱ
- ³æºÅ: 1184404
4Â¥2011-02-16 16:56:46














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