High–Capacity Splitting of Mono– and Dibranched Hexane Isomers by a Robust Zinc–Based Metal–Organic Framework

Yu, Liang; Ullah, Saif; Wang, Hao; Xia, Qibin; Thonhauser, Timo; Li, Jing

doi:10.1002/anie.202211359

High–Capacity Splitting of Mono– and Dibranched Hexane Isomers by a Robust Zinc–Based Metal–Organic Framework

Journal Article · Mon Sep 05 00:00:00 EDT 2022 · Angewandte Chemie (International Edition)

DOI:https://doi.org/10.1002/anie.202211359· OSTI ID:2305534

Yu, Liang ^[1]; Ullah, Saif ^[2]; ^[3]; Xia, Qibin ^[4]; Thonhauser, Timo ^[2]; Li, Jing ^[5]

Shenzhen Polytechnic, Guangdong (China); South China University of Technology, Guangzhou (China); Rutgers University
Wake Forest University, Winston-Salem, NC (United States)
Shenzhen Polytechnic, Guangdong (China)
South China University of Technology, Guangzhou (China)
Rutgers University, Piscataway, NJ (United States); Shenzhen Polytechnic, Guangdong (China)

High-efficiency separation of C₆ alkanes, particularly the mono- and dibranched isomers by using porous solids, is of paramount significance in the petrochemical industry and, remains a daunting challenge. In this work, we report the complete separation of linear/monobranched hexanes from their dibranched isomers through selective size-exclusion by a microporous MOF, Zn-tcpt (H3tcpt=2,4,6-tris(4-carboxyphenoxy)-1,3,5-triazine), with a two-fold interpenetrated structure of hms nets. Importantly, its adsorption capacity and selectivity are notably higher than those of the previously reported adsorbents that can split mono- and dibranched alkane isomers. Dynamic breakthrough measurements verify the excellent separation of C₆ alkane isomers by Zn-tcpt, and the size-exclusion based separation mechanism has been confirmed by ab initio materials modeling. Furthermore, the high-efficiency separation of alkane isomers by Zn-tcpt can be attributed to its optimal pore dimensions as well as high porosity.

View Accepted Manuscript (DOE)

Research Organization:: Wake Forest University, Winston-Salem, NC (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: SC0019902

OSTI ID:: 2305534

Alternate ID(s):: OSTI ID: 1888060

Journal Information:: Angewandte Chemie (International Edition), Journal Name: Angewandte Chemie (International Edition) Journal Issue: 42 Vol. 61; ISSN 1433-7851

Publisher:: WileyCopyright Statement

Country of Publication:: United States

Language:: English

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