从基于平衡的金属有机框架吸附剂到用于石蜡/异石蜡分离的动力学选择性碳分子筛

From an equilibrium based MOF adsorbent to a kinetic selective carbon molecular sieve for paraffin/iso-paraffin separation.

作者信息

Li Baiyan, Belmabkhout Youssef, Zhang Yiming, Bhatt Prashant M, He Hongming, Zhang Daliang, Han Yu, Eddaoudi Mohamed, Perman Jason A, Ma Shengqian

机构信息

Department of Chemistry, University of South Florida, 4202 E. Fowler Avenue, Tampa, FL 33620, USA.

Functional Materials Design, Discovery & Development Research Group (FMD3), Advanced Membranes & Porous Materials Centre (AMPMC), Division of Physical Sciences and Engineering (PSE), 4700 King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia.

出版信息

Chem Commun (Camb). 2016 Nov 24;52(96):13897-13900. doi: 10.1039/c6cc08008a.

DOI:10.1039/c6cc08008a

PMID:27841388

Abstract

We unveil a unique kinetic driven separation material for selectively removing linear paraffins from iso-paraffins via a molecular sieving mechanism. Subsequent carbonization and thermal treatment of CD-MOF-2, the cyclodextrin metal-organic framework, afforded a carbon molecular sieve with a uniform and reduced pore size of ca. 5.0 Å, and it exhibited highly selective kinetic separation of n-butane and n-pentane from iso-butane and iso-pentane, respectively.

摘要

我们展示了一种独特的动力学驱动分离材料，它通过分子筛机制从异链烷烃中选择性去除直链烷烃。对环糊精金属有机框架CD-MOF-2进行后续碳化和热处理，得到了一种孔径均匀且减小至约5.0 Å的碳分子筛，它分别对正丁烷和正戊烷与异丁烷和异戊烷表现出高度选择性的动力学分离。