不同晶化方式对SAPO-11分子筛的物化性质的影响  

Effect of different crystallization ways on physical and chemical properties of SAPO-11

作　　者：刘艳惠[1] 任行涛[1] 杨光[1] 张利霞[1] 裴庆君[1] 

机构地区：[1]中国石化北京化工研究院燕山分院,北京102500

出　　处：《现代化工》2014年第5期100-102,共3页Modern Chemical Industry

摘　　要：以二异丙胺为模板剂,采用动态和静态2种晶化方式进行了SAPO-11分子筛的合成研究。通过XRD、NH3-TPD、TG、BET和SEM等方法对其进行结构表征,结果表明:采用动态晶化方式能够获得分散均匀、粒度<1μm片状长方体形貌的颗粒,而静态晶化获得SAPO-11分子筛的形貌为相对较大的球形团聚颗粒。同时动态晶化获得的SAPO-11分子筛具有更大的比表面积和孔容,分子筛酸量为0.32 mmol/g,以弱的酸性中心为主。The synthesis of SAPO-11 molecular sieve by dynamic and static crystallization method is studied using diisopropylamine as template agent. XRD,NH3-TPD,TG,BET and SEM are used to characterize the physical and chemical properties of SAPO-11 from two crystallization ways. The results show that the static crystallization method leads to the formation of SAPO-11 with relatively large spherical agglomerated particles. In contrast,SAPO-11 molecular sieve obtained from the dynamic crystallization method are rectangular sheet particles with a uniform dispersion and particle size of less than 1 μm. More importantly,it exhibits a greater specific surface area and pore volume with 0. 32 mmol / g of acidic zeolite.

关 键 词：SAPO-11 分子筛 动态晶化 晶粒 晶化方式 

分 类 号：O643.36[理学—物理化学]