Morphology Control and Aromatization of ZSM5/KL Composite Zeolite

doi:10.3969/j.issn.1006-396X.2015.01.001

Journal of Petrochemical Universities ›› 2015, Vol. 28 ›› Issue (1): 1-6.DOI: 10.3969/j.issn.1006-396X.2015.01.001

(1.College of Chemical Engineering，China University of Petroleum (East China), Qingdao Shandong 266580, China; 2.Key Laboratory of Petrochemical Catalytic Science and Technology, Liaoning Shihua University, Fushun Liaoning 113001, China; 3.PetroChina Fushun Petrochemical Company, Fushun Liaoning 113001, China)

Received:2014-10-16 Revised:2014-11-27 Published:2015-02-25 Online:2015-03-03

Z SM - 5 / KL复合分子筛的形貌控制及轻烃芳构化性能

万海^{1, 2, 3}, 张若杰², 秦玉才², 鲁传涛³, 张晓彤², 宋丽娟^{1, 2}

( 1. 中国石油大学( 华东) 化学工程学院, 山东青岛2 6 6 5 8 0; 2. 辽宁石油化工大学石油化工催化科学与技术重点实验室,
辽宁抚顺1 1 3 0 0 1; 3. 中国石油抚顺石化公司, 辽宁抚顺1 1 3 0 0 1)

通讯作者: 宋丽娟( 1 9 6 2 - ) , 女, 博士, 教授, 从事新型催化材料及工艺、催化及分离材料的吸附、扩散及相关动力学的研究; E -m a i l : l s o n g 5 6@2 6 3. n e t 。
作者简介:万海( 1 9 7 4 - ) , 男, 博士研究生, 高级工程师, 从事沸石分子筛类催化材料合成及轻烃芳构化研究; E - m a i l : s e a 3 2 1 5@1 2 6. c o m。
基金资助:
国家自然科学基金( 2 0 9 7 6 0 7 7, 2 1 0 7 6 1 0 0) ; 国家重点基础研究发展规划项目( 9 7 3)( 2 0 0 7 C B 2 1 6 4 0 3) 。

Abstract

Abstract: The ZSM5/KL composite zeolite, using ZSM5 as base material, was synthesized by twostep crystallization. The morphology of shell was controlled by regulating the series, temperature and time of crystallization. These samples were characterized by XRD, Nitrogen adsorptiondesorption and SEM, respectively, and evaluated by the npentane aromatization. The results show that different ways of crystallization has great effect on composite zeolite morphology. Compared with singlestep crystallization method, the twostep crystallization can effectively control the grain growth of shell phase L nanocrystals on the ZSM5 surface, and promote the formation of coreshell structure composite zeolite. Reaction experiment shows that the coreshell composite zeolite has better performance of aromatization than epitaxial crystal type composite zeolite.

Key words: ZSM5/KL, , Crystallization, , Morphology control, , Aromatization

摘要： 以Z SM - 5分子筛为基体, 采用分级晶化方式合成Z SM - 5 / KL复合分子筛。通过调控晶化时间、晶化温度和晶化级数等合成因素控制复合分子筛的合成过程及形貌, 并利用X射线衍射( XR D) 、 N2 吸附脱附、扫描电镜 ( S EM) 等技术对样品进行表征, 采用正戊烷芳构化反应考察复合分子筛的催化性能。结果表明, 不同的晶化方式对复合分子筛的形貌具有明显影响。与单级晶化方式相比, 多级晶化方式可有效调控壳相L纳米晶体在Z SM - 5晶粒表面的生长和形貌, 并促进核壳型复合分子筛的生成。反应实验结果表明, 与混晶型复合分子筛相比, 核壳型复合分子筛具有更好的芳构化性能。

关键词: Z SM - 5 / KL, 晶化方式, 形貌控制, 芳构化

Wan Hai,Zhang Ruojie,Qin Yucai,et al. Morphology Control and Aromatization of ZSM5/KL Composite Zeolite[J]. Journal of Petrochemical Universities, 2015, 28(1): 1-6.

万海, 张若杰, 秦玉才, 鲁传涛, 张晓彤, 宋丽娟. Z SM - 5 / KL复合分子筛的形貌控制及轻烃芳构化性能[J]. 石油化工高等学校学报, 2015, 28(1): 1-6.

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