Splitting Mono- and Dibranched Alkane Isomers by a Robust Aluminum-Based Metal–Organic Framework Material with Optimal Pore Dimensions

Liang Yu; Xinglong Dong; Qihan Gong; Shree Ram Acharya; Yuhan Lin; Hao Wang; Yu Han; Timo Thonhauser; Jing Li

doi:10.1021/jacs.0c01769

Splitting Mono- and Dibranched Alkane Isomers by a Robust Aluminum-Based Metal–Organic Framework Material with Optimal Pore Dimensions

Liang Yu, Xinglong Dong, Qihan Gong, Shree Ram Acharya, Yuhan Lin, Hao Wang, Yu Han, Timo Thonhauser, Jing Li

Research output: Contribution to journal › Article › peer-review

62 Scopus citations

Abstract

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.

Original language	English (US)
Pages (from-to)	6925-6929
Number of pages	5
Journal	Journal of the American Chemical Society
Volume	142
Issue number	15
DOIs	https://doi.org/10.1021/jacs.0c01769
State	Published - Mar 28 2020

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: 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.

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10.1021/jacs.0c01769

https://repository.kaust.edu.sa/bitstream/10754/662423/1/A_jacs.0c01769.pdf

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@article{2357bdc2c37a4aa78607d6f8a4a4534c,

title = "Splitting Mono- and Dibranched Alkane Isomers by a Robust Aluminum-Based Metal–Organic Framework Material with Optimal Pore Dimensions",

abstract = "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.",

author = "Liang Yu and Xinglong Dong and Qihan Gong and Acharya, {Shree Ram} and Yuhan Lin and Hao Wang and Yu Han and Timo Thonhauser and Jing Li",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: 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.",

year = "2020",

month = mar,

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doi = "10.1021/jacs.0c01769",

language = "English (US)",

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AU - Yu, Liang

AU - Dong, Xinglong

AU - Gong, Qihan

AU - Acharya, Shree Ram

AU - Lin, Yuhan

AU - Wang, Hao

AU - Han, Yu

AU - Thonhauser, Timo

AU - Li, Jing

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: 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.

PY - 2020/3/28

Y1 - 2020/3/28

N2 - 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.

AB - 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.

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Splitting Mono- and Dibranched Alkane Isomers by a Robust Aluminum-Based Metal–Organic Framework Material with Optimal Pore Dimensions

Abstract

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CCDC 1970604: Experimental Crystal Structure Determination : catena-[bis(mu-4,4',4''-[benzene-1,3,5-triyltris(oxy)]tribenzoato)-tris(mu-hydroxy)-tri-aluminium(iii) unknown solvate]

CCDC 1970606: Experimental Crystal Structure Determination : catena-[bis(mu-4,4',4''-[benzene-1,3,5-triyltris(oxy)]tribenzoato)-tris(mu-hydroxy)-tri-aluminium(iii) 3-methylpentane unknown solvate]

CCDC 1970605: Experimental Crystal Structure Determination : catena-[bis(mu-4,4',4''-[benzene-1,3,5-triyltris(oxy)]tribenzoato)-tris(mu-hydroxy)-tri-aluminium(iii) n-hexane unknown solvate]

Cite this

Splitting Mono- and Dibranched Alkane Isomers by a Robust Aluminum-Based Metal–Organic Framework Material with Optimal Pore Dimensions

Abstract

Bibliographical note

Access to Document

Other files and links

Fingerprint

Datasets

CCDC 1970604: Experimental Crystal Structure Determination : catena-[bis(mu-4,4',4''-[benzene-1,3,5-triyltris(oxy)]tribenzoato)-tris(mu-hydroxy)-tri-aluminium(iii) unknown solvate]

CCDC 1970606: Experimental Crystal Structure Determination : catena-[bis(mu-4,4',4''-[benzene-1,3,5-triyltris(oxy)]tribenzoato)-tris(mu-hydroxy)-tri-aluminium(iii) 3-methylpentane unknown solvate]

CCDC 1970605: Experimental Crystal Structure Determination : catena-[bis(mu-4,4',4''-[benzene-1,3,5-triyltris(oxy)]tribenzoato)-tris(mu-hydroxy)-tri-aluminium(iii) n-hexane unknown solvate]

Cite this