分子筛催化endo-THDCPD异构制备exo-THDCPD

ZHANG Xiangwen; MIAO Qian; ZOU Jijun; XING Enhui; WANG Li; MI Zhentao

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分子筛催化endo-THDCPD异构制备exo-THDCPD

更新时间：2025-12-10

- 分子筛催化endo-THDCPD异构制备exo-THDCPD
- CIESC Journal Issue 12, (2007)
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- Online First：05 December 2007，
  
  Published：05 December 2007
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ZHANG Xiangwen, MIAO Qian, ZOU Jijun, et al. 分子筛催化endo-THDCPD异构制备exo-THDCPD[J]. CIESC Journal, 2007, (12).
DOI：

ZHANG Xiangwen, MIAO Qian, ZOU Jijun, et al. 分子筛催化endo-THDCPD异构制备exo-THDCPD[J]. CIESC Journal, 2007, (12). DOI：

摘要

挂式四氢双环戊二烯是重要的高能量密度液体燃料，通过桥式四氢双环戊二烯异构反应制得，原有工艺采用污染严重的AlCl3作为催化剂，本文采用分子筛催化剂取代AlCl3，对分子筛筛选、表面酸性调节、反应条件优化和催化剂再生进行了研究。结果表明，具有较大孔径的Y型分子筛具有较高的活性，具有较多弱酸性中心的HUSY效果较佳，负载氟元素可以抑制中强酸位、增加弱酸位，提高反应选择性。最佳反应条件为：催化剂6. 6%F/HSSY，反应温度195℃，催化剂浓度20%。在此条件下异构反应转化率为94. 0%，选择性为98. 4%，高温焙烧可以有效地使催化剂再生而不影响活性。

Abstract

Exo-tetrahydrodicyclopentadiene (exo-THDCPD) is an important high-energy density fuel that can significantly enhance the performance of aircrafts. It is generally produced from the isomerization of endo-THDCPD with environmentally unsafe AlCl3 as catalyst. In this work

zeolites were used as catalyst to develop a green process for the production of exo-THDCPD. Among the zeolites tested

Y type zeolites with larger pores were most active. HUSY was more efficient than HSSY due to the abundance of weak acidic sites. Loading of fluorine could suppress the medium acid and increase the weak acid

promoting the selectivity to exo-THDCPD. The optimal reaction conditions were as following: 6. 6% F/HSSY as catalyst

temperature 195℃

catalyst percentage 20%. In this case

the conversion of endo-THDCPD was 94. 0% and the selectivity to exo-THDCPD was 98. 4%. The deactivated catalyst could be effectively regenerated via calcination at 550℃.

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