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- Title
Design of dual-functional protic porous ionic liquids for boosting selective extractive desulfurization.
- Authors
Jin-Rui Zhang; Jie Yin; Jing He; Hong-Shun Ran; Wei Jiang; Hong-Ping Li; Wen-Shuai Zhu; Hua-Ming Li; Ming Zhang
- Abstract
Porous ionic liquids have demonstrated excellent performance in the field of separation, attributed to their high specific surface area and efficient mass transfer. Herein, task-specific protic porous ionic liquids (PPILs) were prepared by employing a novel one-step coupling neutralization reaction strategy for extractive desulfurization. The single-extraction efficiency of PPILs reached 75.0% for dibenzothiophene. Moreover, adding aromatic hydrocarbon interferents resulted in a slight decrease in the extraction efficiency of PPILs (from 45.2% to 37.3%, 37.9%, and 33.5%), indicating the excellent extraction selectivity of PPILs. The experimental measurements and density functional theory calculations reveal that the surface channels of porous structures can selectively capture dibenzothiophene by the stronger electrophilicity (Eint (HS surface channel/DBT) = - 39.8 kcal mol-1 ), and the multiple extraction sites of ion pairs can effectively enrich and transport dibenzothiophene from the oil phase into PPILs through π...π, C-H...π and hydrogen bonds interactions. Furthermore, this straightforward synthetic strategy can be employed in preparing porous liquids, offering new possibilities for synthesizing PPILs with tailored functionalities.
- Subjects
COUPLING reactions (Chemistry); DENSITY functional theory; HYDROGEN bonding interactions; AROMATIC compounds; IONIC liquids
- Publication
Petroleum Science (KeAi Communications Co.), 2024, Vol 21, Issue 4, p2817
- ISSN
1672-5107
- Publication type
Article
- DOI
10.1016/j.petsci.2024.05.001