SAPO-34分子筛形貌和粒径的影响因素考察  

Investigation of influencing factors of SAPO-34 molecular sieve morphology and particle size

作　　者：张菊 刘志玲 张媛 刘巧霞 张伟 Zhang Ju Liu Zhiling Zhang Yuan Liu Qiaoxia Zhang Wei(Research Institute of Shaanxi Yanchang Petroleum （Group） Co. , Ltd. , Xi＇ an 710075, Shaanxi, China)

机构地区：[1]陕西延长石油(集团)有限责任公司研究院,陕西西安710075

出　　处：《工业催化》2017年第2期33-36,共4页Industrial Catalysis

摘　　要：以四乙基氢氧化铵为模板剂,水热合成法制备SAPO-34分子筛,采用XRD和SEM进行表征,考察硅铝比、晶化温度、晶化时间和陈化时间对分子筛形貌和粒径的影响。结果表明,在硅铝物质的量比为0.8、晶化温度200℃、晶化时间24 h和陈化时间4 h条件下,可合成晶粒均匀和晶体表面光滑的粒径仅为2μm的SAPO-34分子筛。Using TEAOH as the template, SAPO-34 molecular sieves were synthesized by hydrothermal method. The as-synthesized molecular sieves were characterized by means of XRD and SEM. The effects of Si/A1 ratios, crystallization temperatures, crystallization time and aging time on the morphology and particle size of molecular sieves were investigated. The results showed that SAPO-34 molecular sieve, which was obtained under the synthesis condition of Si/Al molar ratio 0.8, crystallization temperature 200 ℃, crystallization time 24 h and aging time 4 h,possessed particle size of 2 μm,uniform grain and smooth crystal surface.

关 键 词：催化剂工程 水热合成法 SAPO-34分子筛 粒径 

分 类 号：TQ426.6[化学工程] TQ424.25