Topologically guided tuning of Zr-MOF pore structures for highly selective separation of C6 alkane isomers
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Type
ArticleAuthors
Wang, HaoDong, 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

KAUST Department
Advanced Membranes and Porous Materials Research CenterChemical Science Program
Nanostructured Functional Materials (NFM) laboratory
Physical Science and Engineering (PSE) Division
Date
2018-05-01Online Publication Date
2018-05-01Print Publication Date
2018-12Permanent link to this record
http://hdl.handle.net/10754/627769
Metadata
Show full item recordAbstract
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.Citation
Wang H, Dong X, Lin J, Teat SJ, Jensen S, et al. (2018) Topologically guided tuning of Zr-MOF pore structures for highly selective separation of C6 alkane isomers. Nature Communications 9. Available: http://dx.doi.org/10.1038/s41467-018-04152-5.Sponsors
We would like to thank the financial support from the Materials Sciences and Engineering Division, Office of Basic Research Energy Sciences of the U.S. Department of Energy through Grant no. DE-FG02-08ER-46491. Y.H. acknowledges the KAUST CCF fund for supporting this study. The Advanced Light Source is supported by the Director, Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. T.T. acknowledges generous support from the Simons Foundation through Grant no. 391888, which endowed his sabbatical at MIT. D.M.P. thanks the Russian Government (Grant 14.B25.31.0005). E.V.A. is grateful to the Russian Science Foundation (Grant no. 16-13-10158). The RU team would also like to acknowledge Micromeritics Instrument Corp. for the award of a 3Flex system through its Instrument Grant program. H.W. would like to thank Ever Velasco for helpful discussions.Publisher
Springer NatureJournal
Nature CommunicationsPubMed ID
29717138Additional Links
https://www.nature.com/articles/s41467-018-04152-5Relations
Is Supplemented By:- [Dataset]
. DOI: 10.5517/ccdc.csd.cc1p8bs2 HANDLE: 10754/664095
- [Dataset]
. DOI: 10.5517/ccdc.csd.cc1p8bt3 HANDLE: 10754/664096
- [Dataset]
. DOI: 10.5517/ccdc.csd.cc1p8br1 HANDLE: 10754/664097
ae974a485f413a2113503eed53cd6c53
10.1038/s41467-018-04152-5
Scopus Count
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