通过协同分离机制在硫酸盐功能化的金属有机框架中单步布他烯净化
Jiyu Cui1, Zhensong Qiu1, Zhenglu Yang1
1Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, 310012, Hangzhou, China.
Angewandte Chemie (International ed. in English)
|April 6, 2024
概括
一个新的硫酸盐功能化的金属有机框架,ZU-609,可以选择性地从复杂的C4混合物中净化1,3-二烯. 这种材料通过协同的尺寸排除和选择性分子识别来实现高纯度,从而实现高效的分离.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 分离科学 分离科学
背景情况:
- 复杂混合物的分离过程耗费大量能源.
- 为选择性分子识别设计多孔材料是具有挑战性的,因为它们具有相似的分子性质.
- 对于聚合物工业来说,有效净化1,3-丁是非常重要的.
研究的目的:
- 设计和合成一种用于选择性净化1,3-丁的新型多孔材料.
- 研究从C4混合物中选择性识别和分离1,3-丁的机制.
- 为了证明材料在工业规模净化中的潜力.
主要方法:
- 合成硫酸盐功能化的金属有机框架 ZU-609.9.
- 使用复杂的C4混合物进行吸附和选择性研究.
- 对毛孔大小,毛孔化学和相互作用机制 (C-H⋅⋅⋅O-S) 的分析.
- 对分离的1,3-丁二烯的再生条件和纯度的评估.
主要成果:
- ZU-609通过C-H⋅⋅⋅O-S相互作用对1,3-butanadiene进行选择性识别.
- 实现了4.4的高C4H6/转2-C4H8选择性.
- 实际尺寸排除较大的C4异构体和基因由于孔径 (4.6 Å).
- 聚合物级1,3-丁 (99.5%) 通过单个吸附-脱附循环从7组分混合物中获得.
- 在环境条件附近,容易再生吸附的1,3-丁二烯.
结论:
- 硫酸盐功能化ZU-609是一种有效的材料,用于选择性1,3-丁净化.
- 尺寸和选择性吸附的协同效应使复杂的混合物能够有效地分离.
- 这种方法为能源密集的分离工艺提供了一个有希望的替代方案.
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