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/ange.202211359

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

Journal Article · Tue Sep 20 00:00:00 EDT 2022 · Angewandte Chemie

DOI:https://doi.org/10.1002/ange.202211359· OSTI ID:1888075

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

Hoffmann Institute of Advanced Materials Shenzhen Polytechnic 7098 Liuxian Blvd., Nanshan District Shenzhen Guangdong 518055 P. R. China, School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 P. R. China
Department of Physics and Center for functional Materials Wake Forest University Winston-Salem NC 27109 USA
Hoffmann Institute of Advanced Materials Shenzhen Polytechnic 7098 Liuxian Blvd., Nanshan District Shenzhen Guangdong 518055 P. R. China
School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 P. R. China
Hoffmann Institute of Advanced Materials Shenzhen Polytechnic 7098 Liuxian Blvd., Nanshan District Shenzhen Guangdong 518055 P. R. China, Department of Chemistry and Chemical Biology Rutgers University 123 Bevier Road Piscataway NJ 08854 USA

Abstract

High‐efficiency separation of C ₆ 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 (H ₃ tcpt=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 C ₆ alkane isomers by Zn‐tcpt, and the size‐exclusion based separation mechanism has been confirmed by ab initio materials modeling. 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 (Publisher)

Sponsoring Organization:: USDOE

Grant/Contract Number:: SC0019902

OSTI ID:: 1888075

Journal Information:: Angewandte Chemie, Journal Name: Angewandte Chemie Journal Issue: 42 Vol. 134; ISSN 0044-8249

Publisher:: Wiley Blackwell (John Wiley & Sons)Copyright Statement

Country of Publication:: Germany

Language:: English

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