动态晶化法合成小晶粒NaY分子筛的研究  

Synthesis of Small Crystal NaY Zeolite by Dynamic Crystallization Methods

作　　者：文建军[1] 

机构地区：[1]中国石化股份有限公司催化剂分公司,中国北京100029

出　　处：《湖南师范大学自然科学学报》2012年第6期62-66,共5页Journal of Natural Science of Hunan Normal University

基　　金：科技部973计划资助项目(2006CB202500)

摘　　要：采用XRD和SEM等手段研究了不同动态晶化方式对NaY分子筛结晶度和晶粒大小等的影响.结果表明,采用动态晶化方式可以减小NaY分子筛晶粒尺寸.搅拌动态晶化产品晶粒大小不均匀,多为片状晶体聚集体,不适于合成小晶粒NaY分子筛.旋转晶化方式可以提高NaY分子筛产品结晶度,对骨架硅铝比没有影响.旋转动态晶化过程具有良好的可重复性.The influence of different dynamic crystallization methods on crystallinity and crystal size of NaY zeolite are studied by means of XRD and SEM.The results show that the crystal size of NaY zeolite can be reduced by dynamic crystallization methods.The NaY zeolite synthesized by stirring dynamic crystallization method has a nonuniform crystal size distribution and most of the crystals are aggregated crystal slices.It indicates that stirring dynamic crystallization method is not suitable for the synthesis of small crystal NaY zeolite.Rotating dynamic crystallization method,which can improve the crystallinity of NaY zeolite and does not affect the ratio of framework SiO2/Al2O3,has good reproducibility.

关 键 词：NAY分子筛 小晶粒 动态晶化 合成 

分 类 号：TQ426.6[化学工程]