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一个微孔的多金属有机框架,用于有效的一步分离分支基的料

Lin Zhou^1,2,3,4, Pedro Brântuas^5,6, Adriano Henrique^5,6,7,8

¹Institut des Matériaux Poreux de Paris, ESPCI Paris, Ecole Normale Supérieure, CNRS, PSL University, 75005, Paris, France.

Angewandte Chemie (International ed. in English)

|February 15, 2024

概括

一个新的金属有机框架 (MOF),MIP-214,有效地分离碳化合物异构体. 这种吸附剂推进了生产高位汽油的总异构化工艺 (TIP),通过将低位汽油从高位汽油组件中分离出来.

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:

高质量的汽油生产需要将碳化合物异构体分离出来,以增加研究八度数 (RON).
总异构化过程 (TIP) 的目标是RON>92,因此需要高效的吸附剂来进行C5/C6异构分离.
目前的分离方法与线性,单一和双分支异构体的复杂混合物作斗争.

研究的目的:

设计和合成一种新的金属有机框架 (MOF) 用于选择性碳化合物同位素分离.
根据它们的RON,评估MOF在分离C5/C6异构体中的有效性.
通过先进的同位素分离建立一种新的吸附剂,以提高汽油质量.

主要方法:

设计和合成一个具有flu-e拓的多子微孔Fe(III) -MOF (MIP-214).
纳入一个不对称的异能功能二位基联体 (4-pyrazolecarboxylic 酸).
用热力学控制的分离实验来确定吸附层次和吸附度.

主要成果:

MIP-214具有独特的微孔结构,适用于碳化合物异构体的分离.
该MOF证明了低RON异构体 (n-hexane,n-pentane) 与高RON异构体 (二分支的hexane,单分支的pentane) 的高效分离.
观察到一个不同的吸层次: (n-hexane≫n-pentane≈2-methylpentane>3-methylpentane) <低RON> ≫(2,3-dimethylbutane≈i-pentane≈2,2-dimethylbutane) <高RON>.

结论:

MIP-214是一种可扩展和有效的单吸剂溶液,用于复杂的碳化合物同位素混合物.
这种MOF促进了高RON异构体的分离,这对于生产高质量的汽油至关重要.
该研究为石化行业提供了基于MOF的分离技术的重大成就.

关键词:

是一个理论化工学.汽油的八度升级汽油的八度升级五和六醇干异构体的分离方法超微孔金属有机框架

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