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.
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)
出处
《工业催化》
CAS
2017年第2期33-36,共4页
Industrial Catalysis
关键词
催化剂工程
水热合成法
SAPO-34分子筛
粒径
catalyst engineering
hydrothermal synthesis method
SAPO-34 molecular sieve
particle size
