Topologically guided tuning of Zr-MOF pore structures for highly selective separation of C6 alkane isomers
Microsoft Excel 2007
Teat, Simon J.
Alexandrov, Eugeny V.
Olson, David H.
Proserpio, Davide M.
Chabal, Yves J.
KAUST DepartmentAdvanced Membranes and Porous Materials Research Center
Physical Sciences and Engineering (PSE) Division
Chemical Science Program
MetadataShow full item record
AbstractAs 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.
CitationWang 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.
SponsorsWe 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.
Except where otherwise noted, this item's license is described as This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
- Separation of hexane isomers in a metal-organic framework with triangular channels.
- Authors: Herm ZR, Wiers BM, Mason JA, van Baten JM, Hudson MR, Zajdel P, Brown CM, Masciocchi N, Krishna R, Long JR
- Issue date: 2013 May 24
- Adsorptive process design for the separation of hexane isomers using zeolites.
- Authors: Luna-Triguero A, Gómez-Álvarez P, Calero S
- Issue date: 2017 Feb 15
- Sustainable Separations of C<sub>4</sub> -Hydrocarbons by Using Microporous Materials.
- Authors: Gehre M, Guo Z, Rothenberg G, Tanase S
- Issue date: 2017 Oct 23
- Sieving di-branched from mono-branched and linear alkanes using ZIF-8: experimental proof and theoretical explanation.
- Authors: Ferreira AF, Mittelmeijer-Hazeleger MC, Granato MA, Martins VF, Rodrigues AE, Rothenberg G
- Issue date: 2013 Jun 14
- Iron-Based Metal-Organic Framework with Hydrophobic Quadrilateral Channels for Highly Selective Separation of Hexane Isomers.
- Authors: Lv D, Wang H, Chen Y, Xu F, Shi R, Liu Z, Wang X, Teat SJ, Xia Q, Li Z, Li J
- Issue date: 2018 Feb 14