Synthesis of small crystal zeolite beta in a biphasic H2O-CTAB-alcohol system
Synthesis of small crystal zeolite beta in a biphasic H2O-CTAB-alcohol system
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双相 H2O-CTAB-醇体系中小晶体 β 沸石的合成
DOI：
10.1016/j.matlet.2008.10.042
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发表时间：
2009-01-31
影响因子：
3
通讯作者：
Chen, Jianmin
中科院分区：
文献类型：
--
作者：
Kong, Lingdong;Chen, Haihan;Chen, Jianmin
以含有β沸石二级构建单元的胶体前驱体为硅源和铝源，在h2o - ctab -醇双相体系中合成了SiO2/Al2O3比为30 ~ 400的β沸石小晶。实验结果表明，本文所采用的合成体系可以很容易地形成小晶体尺寸的沸石β，并且可以得到由许多小颗粒组成的晶体聚集体，其尺寸接近纳米级。所得沸石样品在双相体系中对正己烷加氢裂化的催化活性高于在单水体系中合成的沸石样品。(C) 2008 Elsevier B.V.版权所有
Small crystal zeolite Beta with SiO2/Al2O3 ratios ranging from 30 to 400 has been synthesized in a biphasic H2O-CTAB-Alcohol system using colloidal precursor which contains secondary building units of zeolite Beta as the silica and aluminum sources. The experimental results evidenced that the synthesis system employed here resulted in readily the formation of small crystal size zeolite Beta, and the crystallite aggregates consisting of many small particles with size close to the range of nanometer were obtained. The obtained zeolite Beta samples synthesized in the biphasic system displayed higher catalytic activity for n-hexane hydrocracking than that synthesized in single aqueous system. (C) 2008 Elsevier B.V. All rights reserved.