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 journalArticlepeer-review

9 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 languageEnglish (US)
Pages (from-to)6925-6929
Number of pages5
JournalJournal of the American Chemical Society
Volume142
Issue number15
DOIs
StatePublished - Mar 28 2020

Fingerprint Dive into the research topics of 'Splitting Mono- and Dibranched Alkane Isomers by a Robust Aluminum-Based Metal–Organic Framework Material with Optimal Pore Dimensions'. Together they form a unique fingerprint.

Cite this