| 一种气相合成Silicalite-1沸石膜的新方法 |
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| 引用本文： | 李军,龙英才.一种气相合成Silicalite-1沸石膜的新方法[J].高等学校化学学报,2001,22(2):179-181. |
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| 作者姓名： | 李军 龙英才 |
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| 作者单位： | 复旦大学化学系, 上海 200433 |
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| 摘 要： | 由于在分离和催化领域的潜在应用前景 ,沸石膜近年来受到人们的广泛重视 .制备沸石膜的方法很多 ,如原位水热合成、微波合成、电金属沉积、嵌入法等等 .90年代以来 ,由于可减少昂贵的模板剂用量 ,以及能在不同载体上合成沸石膜等优点 ,蒸汽相合成法 (ＶＰＴ)受到关注1 3] .通常采用浸渍方法或正硅酸乙酯 (ＴＥＯＳ)的水解在载体上形成一层致密的无定形凝胶作为引入的硅源 ,随即在有机模板剂和水的蒸汽相中转晶得到沸石膜 .自 1 992年Ｄｏｎｇ等1 ] 首先采用ＶＰＴ方法合成ＺＳＭ 5和ＺＳＭ 35沸石膜以来 ,已经成功制备了多种结构类型的沸…
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| 关 键 词： | 沸石膜 低温气相化学沉积 硅沸石 堇青石 气体透过 |
| 文章编号： | 0251-0790（2001）02-0179-03 |
| 收稿时间： | 2000-07-07 |
| 修稿时间： | 2000年7月7日 |
A Novel Method for Preparation of Silicalite-1 Zeolite Membrane in Vapor Phase |
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| LI Jun,LONG Ying-Cai.A Novel Method for Preparation of Silicalite-1 Zeolite Membrane in Vapor Phase[J].Chemical Research In Chinese Universities,2001,22(2):179-181. |
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| Authors: | LI Jun LONG Ying-Cai |
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| Institution: | Department of Chemistry, Fudan University, Shanghai 200433, China |
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| Abstract: | A silicalite-1 zeolite membrane was in situ crystallized from a layer of silica species prepared by a novel method of low temperature chemical vapor deposition (LTCVD) on a porous cordierite substrate. XRD patterns show that the membrane consists of MFI type zeolite crystals. The investigation with SEM indicats that the membrane is about 50 μm thick, and covered with well-intergrowth MFI zeolite crystals of about 10 μm in size. The EDX analysis confirms that the membrane is composed of silica in the absence of Al, indicating high silica MFI(Silicalite-1) zeolite grown on the support. The ratio of pure gas permeation is 296 for H2/iso-butane and 13.7 for n/iso-butane at room temperature respectively, confirming that the membrane synthesized on the support of cordierite is high quality without pinhole. |
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| Keywords: | Zeolite membrane LTCVD Silicalite 1 Cordierite Gas permeation |
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