陈化温度对导向剂法制备SAPO-11分子筛及异构化性能的影响  

Effect of Aging Temperatures on Synthesis and Isomerization Properties of SAPO-11 Molecular Sieve

作　　者：吴海琳 孙娜[1,2] 王海彦 吴晓娜[1] 杨占旭 王钰佳[1] 彭伊淇[1] WU Hai-lin;SUN Na;WANG Hai-yan;WU Xiao-na;YANG Zhan-xu;WANG Yu-jia;PENG Yi-qi(College of Chemistry, Chemical Engineering and Environmental Engineering, Liaoning Shihua University, Fushun 113001, China;College of Chemical Engineering, China University of Petroleum, Qingdao 266580, China)

机构地区：[1]辽宁石油化工大学化学化工与环境学部,抚顺113001 [2]中国石油大学(华东)化学工程学院,青岛266580

出　　处：《人工晶体学报》2019年第2期307-311,共5页Journal of Synthetic Crystals

基　　金：国家自然科学基金(2016-Z0030)

摘　　要：采用导向剂法在不同陈化温度下成功合成SAPO-11分子筛。利用XRD、N_2吸附-脱附等温曲线,BET物理吸附,NH3-TPD以及扫描电镜(SEM)等方法对分子筛的形貌,酸性质以及孔结构性质进行分析表征。以正十二烷为原料,考察Pt负载量为0. 5%的Pt/SAPO-11催化剂的异构化反应催化性能。结果表明:不同陈化温度影响催化剂的性能,陈化温度为120℃合成的SAPO-11分子筛具有最优性能,晶粒尺寸约为2μm,BET总比表面积为208. 8 m^2·g^(-1),正十二烷加氢异构化的异构烃收率最高达66. 7%。SAPO-11 molecular sieves were successfully synthesized by the guidance agent method at different aging temperatures. The morphology, acid properties and pore structure of molecular sieve were characterized by physical adsorption of NH 3-TPD and scanning electron microscope (SEM). The hydroisomerization performance of Pt/SAPO-11 catalyst loaded with 0.5% chloroplatinic acid was investigated by using n-dodecane of long-chain alkanes as raw material. The results show that different aging temperatures affect the performance of the catalyst. When the aging temperature is 120 ℃, the SAPO-11 molecular sieve has the best performance, the grain size is about 2 μm BET total specific surface area is up to 208.8 m 2·g -1 , and the iso-hydrocarbon yield of dodecane hydroisomerization is up to 66.7%.

关 键 词：SAPO-11分子筛 导向剂法 陈化温度 异构烃收率 

分 类 号：O643.36[理学—物理化学]