The Synthesis, Characterization and Catalytic Performance Research of the Si-Al Composite Zeolite

Journal of Petrochemical Universities ›› 2008, Vol. 21 ›› Issue (2): 33-35.

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The Synthesis, Characterization and Catalytic Performance Research of the Si-Al Composite Zeolite

LI Feng-yan1, ZHANG Ling-ling1, SUN Gui-da1, ZHAO Tian-bo3

(1. Beijing Institute of Petro-Chemical Technology, Beijing 102617,P.R. China; 2.Beijing University of Chemical Technology, Beijing 100029,P.R. China; 3.Beijing Institute of Technology, Beijing 100081,P.R.China)

Received:2007-04-20 Published:2008-06-20 Online:2017-06-28

硅铝复合分子筛的合成和表征以及催化性能

李凤艳1, 张玲玲2, 孙桂大1, 赵天波3

(1.北京石油化工学院,北京102617; 2.北京化工大学,北京100029; 3.北京理工大学,北京100081)

作者简介:李凤艳(1960-),女,吉林长春市,博士
基金资助:
上海石油化工研究院973 计划项目(2003CB615802)

Abstract

Abstract:

A kind of Si-Al composite zeolite was synthesized by hydrothermal method and characterized by XRD, nitrogen adsorption-desorption and IR. The results of XRD show that the zeolite belongs to hexagonal symmetry, and it is a pure phase. The composited zeolite possesses both microporous and mesoporous structures base on the pore size distributions, and presents much more Bronsted and Lewis acidic sites than HZSM-5. The catalytic cracking activity of 1,3,5-triisopropylbenzene over the hierarchical zeolite is more than that over HZSM-5 due to its mesopore structure and more acid amount.

Key words:

Si-Al composite zeolite, Catalytic cracking, Mesopore-micropore, HZSM-5

摘要： 通过水热法合成了一种硅铝复合分子筛。并采用XRD,氮气吸附-脱附(BET)和吡啶红外吸附光谱(IR)进行了表征。XRD测试显示此种分子筛属于六方晶相,并且只存在此单一晶相。氮气吸附-脱附测试的孔尺寸分布显示,此种分子筛具有中孔和微孔结构。吡啶红外吸附光谱显示,此种分子筛与HZSM-5分子筛相比,具有更多的B酸和L酸中心。由于中孔结构的存在和较强的酸性,对于大分子烃1,3,5-三异丙基苯的催化裂化反应,此种分子筛的活性远大于HZSM-5分子筛。

关键词: 硅铝复合分子筛, 催化裂化, 中孔-微孔, HZSM-5

LI Feng-yan, ZHANG Ling-ling, SUN Gui-da, ZHAO Tian-bo.

The Synthesis, Characterization and Catalytic Performance Research of the Si-Al Composite Zeolite

[J]. Journal of Petrochemical Universities, 2008, 21(2): 33-35.

李凤艳, 张玲玲, 孙桂大, 赵天波. 硅铝复合分子筛的合成和表征以及催化性能[J]. 石油化工高等学校学报, 2008, 21(2): 33-35.

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The Synthesis, Characterization and Catalytic Performance Research of the Si-Al Composite Zeolite

硅铝复合分子筛的合成和表征以及催化性能

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