石油炼制与化工 ›› 2012, Vol. 43 ›› Issue (2): 65-70.

• 催化剂 • 上一篇    下一篇

Ga改性HZSM-5催化剂芳构化性能的考察

杨在峰1,龙化云1,王祥生1,2,郭新闻1,2   

  1. 1. 大连理工大学化工学院,辽宁  大连 116024
      2. 大连理工大学精细化工国家重点实验室
  • 收稿日期:2011-05-16 修回日期:2011-07-05 出版日期:2012-02-12 发布日期:2012-01-30
  • 通讯作者: 郭新闻 E-mail:xinwenguo701@163.com

STUDY ON THE AROMATIZATION PERFORMANCE OF Ga/HZSM-5 CATALYST

  • Received:2011-05-16 Revised:2011-07-05 Online:2012-02-12 Published:2012-01-30

摘要: 以不同温度水热处理的纳米HZSM-5为母体制备了Ga/HZSM-5催化剂,并对该催化剂在FCC汽油芳构化上的性能进行考察。结果表明:以600 oC水热处理、硝酸洗涤的HZSM-5为母体制备的Ga/HZSM-5(GaHS600)的芳构化性能最优,当温度为480 oC,WHSV为1 h-1时,GaHS600上所得产品中芳烃和(C3+C4)体积分数分别为58.3%和7.6%。在本实验考察条件下,金属二次改性对Ga/HZSM-5芳构化性能的提高并无有利影响。

关键词: 芳构化 , 水热处理 , HZSM-5 , FCC汽油

Abstract: Ga/HZSM-5 catalysts were prepared using nano-scale HZSM-5 hydrothermally treated under various temperatures as base materials. The aromatization performances of Ga/HZSM-5 catalysts were investigated using full rang FCC gasoline as feed. Results showed that Ga/HZSM-5 catalyst prepared with nano-HZSM-5 hydrothermally treated under 600 ℃ followed by HNO3 washing exhibited the best aromatization performance: under a reaction temperature of 480 ℃ and WHSV of 1 h-1,the volume fraction of aromatics and (C3+C4 ) in the product was 58.3% and 7.6%, respectively. When a second metal, such as Fe, Cu and Cr, was introduced into Ga/HZSM-5 catalyst, without positive effect on its aromatization performance was observed under the testing conditions.

Key words: aromatization, hydrothermal treatment, HZSM-5, FCC gasoline