Topologically guided tuning of Zr-MOF pore structures for highly selective separation of C6 alkane isomers

Hao Wang, Xinglong Dong, Junzhong Lin, Simon J. Teat, Stephanie Jensen, Jeremy Cure, Eugeny V. Alexandrov, Qibin Xia, Kui Tan, Qining Wang, David H. Olson, Davide M. Proserpio, Yves J. Chabal, Timo Thonhauser, Junliang Sun, Yu Han, Jing Li

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

As an alternative technology to energy intensive distillations, adsorptive separation by porous solids offers lower energy cost and higher efficiency. Herein we report a topology-directed design and synthesis of a series of Zr-based metal-organic frameworks with optimized pore structure for efficient separation of C6 alkane isomers, a critical step in the petroleum refining process to produce gasoline with high octane rating. Zr6O4(OH)4(bptc)3 adsorbs a large amount of n-hexane but excluding branched isomers. The n-hexane uptake is ~70% higher than that of a benchmark adsorbent, zeolite-5A. A derivative structure, Zr6O4(OH)8(H2O)4(abtc)2, is capable of discriminating all three C6 isomers and yielding a high separation factor for 3-methylpentane over 2,3-dimethylbutane. This property is critical for producing gasoline with further improved quality. Multicomponent breakthrough experiments provide a quantitative measure of the capability of these materials for separation of C6 alkane isomers. A detailed structural analysis reveals the unique topology, connectivity and relationship of these compounds.

Original languageEnglish
Article number1745
JournalNature communications
Volume9
Issue number1
DOIs
Publication statusPublished - Dec 1 2018

Fingerprint

Gasoline
Alkanes
Pore structure
Isomers
alkanes
isomers
Tuning
tuning
porosity
Zeolites
Benchmarking
Distillation
gasoline
Petroleum
topology
Metals
Topology
Technology
Petroleum refining
Costs and Cost Analysis

ASJC Scopus subject areas

  • Chemistry(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Physics and Astronomy(all)

Cite this

Topologically guided tuning of Zr-MOF pore structures for highly selective separation of C6 alkane isomers. / Wang, Hao; Dong, Xinglong; Lin, Junzhong; Teat, Simon J.; Jensen, Stephanie; Cure, Jeremy; Alexandrov, Eugeny V.; Xia, Qibin; Tan, Kui; Wang, Qining; Olson, David H.; Proserpio, Davide M.; Chabal, Yves J.; Thonhauser, Timo; Sun, Junliang; Han, Yu; Li, Jing.

In: Nature communications, Vol. 9, No. 1, 1745, 01.12.2018.

Research output: Contribution to journalArticle

Wang, H, Dong, X, Lin, J, Teat, SJ, Jensen, S, Cure, J, Alexandrov, EV, Xia, Q, Tan, K, Wang, Q, Olson, DH, Proserpio, DM, Chabal, YJ, Thonhauser, T, Sun, J, Han, Y & Li, J 2018, 'Topologically guided tuning of Zr-MOF pore structures for highly selective separation of C6 alkane isomers', Nature communications, vol. 9, no. 1, 1745. https://doi.org/10.1038/s41467-018-04152-5
Wang, Hao ; Dong, Xinglong ; Lin, Junzhong ; Teat, Simon J. ; Jensen, Stephanie ; Cure, Jeremy ; Alexandrov, Eugeny V. ; Xia, Qibin ; Tan, Kui ; Wang, Qining ; Olson, David H. ; Proserpio, Davide M. ; Chabal, Yves J. ; Thonhauser, Timo ; Sun, Junliang ; Han, Yu ; Li, Jing. / Topologically guided tuning of Zr-MOF pore structures for highly selective separation of C6 alkane isomers. In: Nature communications. 2018 ; Vol. 9, No. 1.
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