无晶种水热合成高结晶度KL分子筛  

Synthesis of Zeolite KL with High Crystallinity Via Hydrothermal Method without Seeding

作　　者：刘淑萍[1] 张宁[1] 

机构地区：[1]河北理工大学化工与生物技术学院,河北唐山063009

出　　处：《河北理工大学学报（自然科学版）》2010年第2期71-74,共4页Journal of Hebei Polytechnic University:Social Science Edition

摘　　要：在不引入KL分子筛晶种和导向剂的情况下,以硅溶胶、铝酸钠作为硅源和铝源,控制原料凝胶的陈化温度和陈化时间,水热合成出具有较高结晶度的KL分子筛。通过XRD分析手段对合成出的KL分子筛进行表征,结果发现当陈化温度15～55℃,陈化时间24～120 h时,水热合成出的KL分子筛的结晶度为89%～94%,因此陈化时间和陈化温度在控制KL分子筛的结晶度大小上起到非常重要的作用。Zeolite KL with high crystallinity could be synthesized by hydrothermal method,using silica sol and sodium aluminate as the main raw materials without seed or crystallization directing agent under variable aging time and aging temperature.The zeolite KL samples were characterized by XRD.The results of XRD indicated that was the typical zeolite KL and its characteristic peak value was high correspondingly at aging temperature 15～55℃and aging time 24～120 h.The aging treatment was found to be a crucial factor for the synthesized of zeolite KL.

关 键 词：无晶种 KL分子筛 陈化影响 水热合成 

分 类 号：O643.36[理学—物理化学]