在双床催化剂上转化C8芳化合物
Peixi Feng1, Chenglin Kang1, Zhenhuan Zhou1
1Research Institute of Petroleum Processing, SINOPEC Beijing 100083 PR China kangcl.ripp@sinopec.com.
RSC advances
|June 14, 2024
概括
一种新的双床催化剂增强了C8芳香物的转化. 修改后的ZSM-5和ZSM-39层改善了乙基脱基化和异相化,提高了整体性能.
科学领域:
- 催化剂是一种催化剂.
- 化学工程是化学工程的重要组成部分.
- 材料科学 材料科学 材料科学
背景情况:
- 对于石化工艺来说,有效的C8芳物的转化是至关重要的.
- 传统的单层催化剂经常面临复杂芳香混合物的活性和选择性的限制.
- 开发先进的催化材料对于优化芳转化是必不可少的.
研究的目的:
- 设计和合成一个双床催化剂,以改善C8芳的转化.
- 优化ZSM-5和ZSM-39组件用于特定反应的准备.
- 为了评估双床催化剂的性能与传统单床系统相比.
主要方法:
- 制备一个双层催化剂,包括SiO2涂层ZSM-5 (上层) 和ZSM-39 (下层).
- 通过化学液体沉积 (CLD) 使用四乙烯正酸盐 (TEOS) 修改ZSM-5.
- 使用控制OH-/SiO2摩尔比率 (0.05) 的pyrrolidine合成ZSM-39.
主要成果:
- 采用0.6g TEOS每克催化剂实现了ZSM-5的最佳催化性能.
- 在OH-/SiO2摩尔比为0.05.5的情况下,ZSM-39的最佳催化性能可以实现.
- 双床催化剂,上下层质量比为1:1,与单床ZSM-5相比,显示出更高的活性和选择性.
结论:
- 开发的双床催化剂可以有效地转化C8芳香物.
- 修改后的ZSM-5用于乙基脱基和ZSM-39用于西异构的协同组合导致性能提高.
- 这种双床方法为改善涉及芳碳化合物的催化过程提供了一个有希望的策略.
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