纯硅ZSM-35的合成及模板剂的影响

SYNTHESIS OF PURESILICA ZSM35 ZEOLITES AND THE INFLUENCE OF TEMPLATE

分别以乙二胺和正丁胺为模板剂，以无定形二氧化硅（白炭黑）为硅源，在Ｎａ２Ｏ－ＳｉＯ２－Ｈ２Ｏ水热体系中合成了纯硅ＺＳＭ－３５沸石。利用ＸＲＤ、ＳＥＭ、ＩＲ等表征了它的物理化学特性，探讨了模板剂对晶化过程及产物的影响。测试结果表明，纯硅ＺＳＭ－３５沸石的晶胞体积大于相同条件下合成的硅铝成分的同类沸石。

Puresilica zeolite ZSM35 was synthesized in Na2OSiO2H2O hydrothermal system by using ethylenediamine(EDA)or nbutylamine(NBA)as template,with the silica source being fumed amorphous silica.Characterization of the structural features of the samples were conducted by means of XRD,SEM,and IR.Effects of template on the crystallization of the products were discussed.The lattice volumes of puresilica ZSM35 samples were found to be slightly larger than that of conventional aluminosiliceous ZSM35 prepared in the same system.