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Title: Shifting Desulfurization Equilibria in Ionic Liquid-Oil Mixtures
Authors: Kareem, JH
Abbott, AP
Ryder, K
First Published: 8-Jan-2019
Publisher: American Chemical Society
Citation: Energy and Fuels, 2019, 33, 1106−1113
Abstract: Ionic liquids (ILs) and deep eutectic solvents have been used for the extraction of molecules, particularly natural products. An often studied system is that for thiophene removal from oil. In the current study, ILs have been used for the removal of thiophene (Th), benzothiophene (BT), and dibenzothiophene by liquid-liquid extraction. The equilibrium can be shifted by polymerizing the thiophenic compounds both electrochemically and chemically. A 1:1 mixture of 1-butyl-3-methylimidazolium chloride (Bmim)Cl and FeCl3 was used to extract Th and BT from alkane layers using electropolymerization to shift the position of the equilibrium. While the process could be carried out, the kinetics of polymer formation were too slow to make this a viable process. The final part of the study used a 1:2 (Bmim)Cl/FeCl3 mixture to chemically remove sulfur-containing compounds from alkane layer. It was shown that the chemical polymerization reaction of Th is around 1500 times faster than electrochemical polymerization. Issues associated with the regeneration of the liquid are discussed.
DOI Link: 10.1021/acs.energyfuels.8b04291
ISSN: 0887-0624
eISSN: 1520-5029
Embargo on file until: 8-Jan-2020
Version: Post-print
Status: Peer-reviewed
Type: Journal Article
Rights: Copyright © 2019 American Chemical Society. Deposited with reference to the publisher’s open access archiving policy. (
Description: The file associated with this record is under embargo until 12 months after publication, in accordance with the publisher's self-archiving policy. The full text may be available through the publisher links provided above.
Appears in Collections:Published Articles, Dept. of Chemistry

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