应用化学 ›› 1996, Vol. 0 ›› Issue (3): 105-106.

• 研究简报 • 上一篇    下一篇

分子筛的气流粉碎及其催化性能

董为毅1, 张文杰2, 陶克毅2, 苏明2   

  1. 1. 南开大学新能源材料化学研究所, 天津 300071;
    2. 南开大学化学系 天津
  • 收稿日期:1995-08-19 修回日期:1995-12-18 出版日期:1996-06-10 发布日期:1996-06-10

Influence of Air Stream Pulverization on the Surface Acid Center and Catalytic Property of Zeolite

Dong Weiyi1, Zhang Wenjie2, Tao Keyi2, Shu Ming2   

  1. 1. Institute of New Energy Material Chemistry, Nankai University, Tianjin 300071;
    2. Department of Chemistry, Nankai University, Tianjin
  • Received:1995-08-19 Revised:1995-12-18 Published:1996-06-10 Online:1996-06-10

摘要: 合成微颗粒分子筛在一些特征的催化反应中,如甲苯岐化、甲苯甲基化、二甲苯异构化,具有特殊的性质,其催化性能与微颗粒的外表面积及粒度大小密切相关.但其合成工艺较为复杂.用气流粉碎可以得到极小的微颗粒,工艺简单易行.

关键词: 气流粉碎, 分子筛, 酸中心, 催化性能, 裂解

Abstract: The ZSM-5 and Y zeolites were pulverized by air stream to form fine particles. The particle size distribution,surface area,IR and TPD spectra were determined for both of the raw and fine particles.The catalytic activity of fine particle in cumene cracking was com-pared with the raw on pulse microreactor connected on line with a chromatograph.After ZSM-5 and Y zeolites being pulverized,their B and L acid amount increased and catalytic activity improved apparently.

Key words: air stream pulverization, zeolite, acid center, catalysis property, cracking