催化学报

催化学报 ›› 2011, Vol. 32 ›› Issue (6): 992-996.DOI: 10.3724/SP.J.1088.2011.10107

• 研究论文 • 上一篇    下一篇

无粘结剂成型的 Zn/ZSM-5 催化剂上混合碳四烃类芳构化反应性能

李玉宁, 任丽萍, 李亚男, 金照生, 滕加伟, 杨为民   

  1. 中国石油化工股份有限公司上海石油化工研究院, 上海 201208
  • 收稿日期:2011-01-07 修回日期:2011-01-24 出版日期:2011-06-21 发布日期:2014-10-31

Aromatization of Mixed C4 Hydrocarbons over the Binderless Zn/ZSM-5 Catalyst

LI Yuning*, REN Liping, LI Yanan, JIN Zhaosheng, TENG Jiawei, YANG Weimin   

  1. Shanghai Research Institute of Petrochemical Technology, SINOPEC, Shanghai 201208, China
  • Received:2011-01-07 Revised:2011-01-24 Online:2011-06-21 Published:2014-10-31

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1131

被引次数

16

摘要： 制备了无粘结剂成型的 Zn/ZSM-5 分子筛催化剂, 并与机械压片和引入氧化铝或氧化硅粘结剂成型的催化剂相比较, 采用 N2-物理吸附-脱附、扫描电子显微镜、NH3-程序升温脱附、吡啶吸附红外光谱和 X 射线光电子能谱等手段对催化剂进行了表征, 并评价了催化剂上混合碳四烃类芳构化反应性能. 结果表明, 相对于机械压片和引入粘结剂成型的催化剂, 采用无粘结剂成型的 Zn/ZSM-5 催化剂具有较大的比表面积, 负载的 Zn 物种分布更加均匀, 因而在混合碳四烃类芳构化过程中表现出较高的催化活性和稳定性.

关键词: 无粘结剂, 锌, ZSM-5 分子筛, 负载型催化剂, 混合烃类, 芳构化

Abstract: Four Zn/ZSM-5 catalyst samples were prepared by mechanical pressing, introducing binder of aluminum oxide, introducing binder of silicon oxide, and binderless molding, respectively. The samples were characterized by N2 physical adsorption, scanning electron microscopy, NH3 temperature-programmed desorption, pyridine Fourier transform infrared spectroscopy, and X-ray photoelectron spectroscopy and were evaluated by aromatization of mixed C4 hydrocarbons. The results indicated that, compared with the mechanical pressed catalyst and the shaped catalyst samples with binders, the binderless Zn/ZSM-5 sample possessed higher specific surface area, accommodated more Zn species inside the zeolite crystals, and showed better catalytic performance in the aromatization of mixed C4 hydrocarbons.

Key words: binderless, zinc, ZSM-5 zeolite, supported catalyst, mixed hydrocarbons, aromatization