Splitting Mono- and Dibranched Alkane Isomers by a Robust Aluminum-Based Metal–Organic Framework Material with Optimal Pore Dimensions
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2021-03-28
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ArticleAuthors
Yu, LiangDong, Xinglong

Gong, Qihan
Acharya, Shree Ram
Lin, Yuhan
Wang, Hao

Han, Yu

Thonhauser, Timo
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
2020-03-28Online Publication Date
2020-03-28Print Publication Date
2020-04-15Embargo End Date
2021-03-28Submitted Date
2020-02-13Permanent link to this record
http://hdl.handle.net/10754/662423
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The separation of alkanes with different degrees of branching, particularly mono- and dibranched isomers, represents a challenging yet important industrial process for the production of premium gasoline blending components with high octane number. We report here the separation of linear/monobranched and dibranched alkanes through complete molecular sieving by a robust aluminum-based MOF material, Al-bttotb (H3bttotb = 4,4',4″-(benzene-1,3,5-triyltris(oxy))tribenzoicacid). Single- and multicomponent adsorption experiments reveal that the material adsorbs linear and monobranched alkanes, but fully excludes their dibranched isomers. Adsorption sites of alkanes within the MOF channels have been identified by single-crystal X-ray diffraction studies, and the adsorption mechanism was explored through computational calculations and modeling. The highly selective adsorption of the MOF should be attributed to its optimal pore dimensions.Citation
Yu, L., Dong, X., Gong, Q., Acharya, S. R., Lin, Y., Wang, H., … Li, J. (2020). Splitting Mono- and Dibranched Alkane Isomers by a Robust Aluminum-Based Metal–Organic Framework Material with Optimal Pore Dimensions. Journal of the American Chemical Society. doi:10.1021/jacs.0c01769Sponsors
We thank the National Natural Science Foundation of China (21901166) and Guangdong Natural Science Foundation(2019A1515010692) for financial support. Work in the U.S. was entirely supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Award No. DE-SC0019902.Publisher
American Chemical Society (ACS)PubMed ID
32223142Additional Links
https://pubs.acs.org/doi/abs/10.1021/jacs.0c01769Relations
Is Supplemented By:- [Dataset]
. DOI: 10.5517/ccdc.csd.cc244kyt HANDLE: 10754/664876
- [Dataset]
. DOI: 10.5517/ccdc.csd.cc244kwr HANDLE: 10754/664877
- [Dataset]
. DOI: 10.5517/ccdc.csd.cc244kxs HANDLE: 10754/664878
ae974a485f413a2113503eed53cd6c53
10.1021/jacs.0c01769
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