Effect of template content on the physicochemical characterization and catalytic performance of SAPO-11 for the hydroisomerization of n-tetradecane

被引：0
作者：
Liu, Ping [1 ,2 ]
Ren, Jie [1 ]
Sun, Yu-Han [1 ]
机构：
[1] State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences
[2] Graduate School, Chinese Academy of Sciences
来源：
Ranliao Huaxue Xuebao/Journal of Fuel Chemistry and Technology | 2008年 / 36卷 / 05期
关键词：
!sup]29[!/sup]Si MAS NMR; Hydroisomerization; Hydrothermal synthesis; Ratio of DPA/DIPA; SAPO-11 molecular sieve; Template content;
D O I：
10.1016/s1872-5813(08)60035-3
中图分类号：
学科分类号：
摘要：
Different SAPO-11 have been synthesized hydrothermally using the mixed template of di-n-propylamine (DPA) and di-iso-propylamine (DIPA) by varying the template content or the ratio of DPA/DIPA. Products were characterized using X-ray diffraction (XRD), N2 adsorption, NH3-temperature-programed desorption (TPD) and 29Si MAS NMR, and evaluated towards n-tetradecane skeletal isomerization. The results indicated that the template had strong influence on the crystallinity, the Si distribution and thus the acidity of SAPO-11. The sample prepared at template content of 1.5 and w (DPA) of 66% possessed small silicon domains and large amount of Si(n Al)(0 < n < 4) sites, and the catalyst obtained with this method performed highest catalytic activity in the hydroisomerization of n-tetradecane due to the high acidity.
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页码：610 / 615
页数：5
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