无粘结剂成型的ZnZSM-5催化剂上混合碳四烃类芳构化反应-催化学报.PDFVIP

2011 Chinese Journal of Catalysis Vol. 32 No. 6 文章编号: 0253-9837(2011)06-0992-05 DOI : 10.3724/SP.J.1088.2011.10107 研究论文: 992~996 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 中国石油化工股份有限公司上海石油化工研究院, 上海 201208 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 N -物理吸附-脱附、扫描电子显微镜、NH -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 2 3 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 中图分类号：O643 文献标识码：A 收稿日期: 2011-01-07. 接受日期: 2011-01-24. *通讯联系人. 电话: (0216502; 电子信箱: yuning.li@ Aromatization of Mixed C4 Hydrocarbons over the Binderless Zn/ZSM-5 Catalyst * LI Yuning , REN Liping, LI Yanan, JIN Zhaosheng, TENG Jiawei, YANG Weimin Shanghai Research Institute of Petrochemical Technology, SINOPEC, Shanghai 201208, China 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 spectros- copy 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