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全硅MEL纳米分子筛的合成及物化性质I.全硅MEL纳米分子筛的合成
引用本文:董俊萍,余辉,谢颂海,龙英才. 全硅MEL纳米分子筛的合成及物化性质I.全硅MEL纳米分子筛的合成[J]. 化学学报, 2002, 60(5): 950-954
作者姓名:董俊萍  余辉  谢颂海  龙英才
作者单位:复旦大学化学系.上海(200433)
基金项目:国家自然科学基金 (No .2 0 0 730 10 ),教育部博士点基金资助项目
摘    要:在TEOS-TBAOH-H_2O反应物体系中,水热条件下制备了全硅MEL (Silicalite- 2)沸石纳米晶。详细讨论反应物中TBAOH/TEOS摩尔比、H_2O/TEOS摩乐比、反应温 度等对沸石粒径的影响。结果表明,反应物中较高的碱度和TEOS(硅源)浓度,及 较低的晶化温度有利于MEL纳米分子筛的合成。

关 键 词:沸石  分子筛  纳米相材料  水热反应  粒径  
修稿时间:2001-08-27

Synthesis and Physicochemical Properties of Siliceous Nano-Sized MEL Molecular Sieves I. Synthesis of Siliceous Nano-Sized MEL Molecular Sieves
DONG,Jun-Ping YU,Hui XIE,Song-Hai LONG,Ying-Cai. Synthesis and Physicochemical Properties of Siliceous Nano-Sized MEL Molecular Sieves I. Synthesis of Siliceous Nano-Sized MEL Molecular Sieves[J]. Acta Chimica Sinica, 2002, 60(5): 950-954
Authors:DONG  Jun-Ping YU  Hui XIE  Song-Hai LONG  Ying-Cai
Affiliation:Department of Chemistry, Fudan University.Shanghai(200433)
Abstract:Siliceous nano-sized MEL zeolite with average particle size less than 100 nm has been hydrothermally prepared in the reactant system of TBAOH-TEOS-H 2O free of alkali cations. The factors that influence particle size are also discussed. Higher molar ratio of TBAOH/TEOS and lower molar ratio of H 2O/TEOS in the reactant, as well as lower crystallization temperature are favorable to the formation of the zeolite with small particle size.
Keywords:MEL zeolite   nano-sized   hydrothermal synthesis   Silicalite-2   ZSM-11  
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