Characteristics and Catalytic Performance of Nanocrys talline and Non - Nanocry stalline ZSM - 5 Zeolites

Journal of Petrochemical Universities ›› 2007, Vol. 20 ›› Issue (1): 31-34.

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Characteristics and Catalytic Performance of Nanocrys talline and Non - Nanocry stalline ZSM - 5 Zeolites

ZHANG Ling - ling¹,LI Feng - yan ²,ZHAO Tian - bo ³,WANG Yue²

Received:2006-09-06 Published:2007-03-20 Online:2017-06-28

纳米与非纳米ZSM - 5 分子筛的表征及催化性能

张玲玲¹ , 李凤艳² , 赵天波³, 王　岳²

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

作者简介:中国石油化工股份有限公司资助项目(101063)

Abstract

Abstract:

　The characteristics and catalytic performance of nanocr ystalline and no n - nano crystalline ZSM - 5 Zeolites were studied. The zeolites were characterized by XRD and SEM , the acidity was measured by NH3 - TPD, surface area and pore volume were determined by N2 adsorption. Toluene alkylation and o - xylene isomerization were chosen and the catalytic activity was estimated with impulse minisize reactor - chromatogram device. The results show that to luene alkylation and o - xylene isomerization convertion of nano crystalline ZSM - 5 zeolite are 60. 98 %(450 ℃) and 90. 38 %(500 ℃) respectively , which are higher than that of non - nano crystalline ZSM - 5 zeolite(46. 18% and 75. 59 %), so nano crystalline ZSM - 5 zeolite has better catalytic activity.

Key words: ZSM - 5, , Zeolite, , Nano, , No n - nano, , Catalytic activity

摘要： 对纳米与非纳米ZSM - 5 分子筛进行了表征和催化性能的研究。分子筛采用XRD , SEM 进行表征,采用NH₃ - TPD 对ZSM - 5 分子筛进行酸性测定, N₂吸附测定比表面积和孔容积。选用甲苯烷基化, 二甲苯异构化反应, 使用脉冲微反- 色谱联用装置对其进行催化活性的评价。纳米ZSM - 5 分子筛的甲苯烷基化和二甲苯异构化转化率分别为60. 98%(450 ℃)和90. 38%(500 ℃), 其值高于非纳米ZSM - 5 分子筛(转化率分别为46. 18 %和75. 59%), 纳米ZSM - 5 分子筛表现出较好的催化活性。

关键词: 　ZSM - 5, 　分子筛, , 　纳米, , 　非纳米, , 　催化活性

ZHANG Ling - ling,LI Feng - yan,ZHAO Tian - bo,WANG Yue. Characteristics and Catalytic Performance of Nanocrys talline and Non - Nanocry stalline ZSM - 5 Zeolites[J]. Journal of Petrochemical Universities, 2007, 20(1): 31-34.

张玲玲, 李凤艳, 赵天波3, 王　岳. 纳米与非纳米ZSM - 5 分子筛的表征及催化性能[J]. 石油化工高等学校学报, 2007, 20(1): 31-34.

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Characteristics and Catalytic Performance of Nanocrys talline and Non - Nanocry stalline ZSM - 5 Zeolites

纳米与非纳米ZSM - 5 分子筛的表征及催化性能

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