Effect of 2‐Pyrrolidone Protic Ionic Liquids on Removal of Pyridine from Fossil Fuel Model Mixtures

Yang, Hui; Wang, Dan; Gao, Jun; Zhang, Lianzheng; Zhang, Tao; Xu, Dongmei; Wang, Yinglong

doi:10.1002/ceat.202200443

Cited by 2 publications

(2 citation statements)

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“…The denitrification efficiency was enhanced 375 ) and membranes for the selective separation of N-containing compounds from model fuel comprising pyridine, quinoline, isoquinoline, and heptane. 379 The permeation rates for different SILMs were predominantly governed by the polarity of the permeating species.…”

Section: Extractive Denitrification (Edn) Using Ilsmentioning

confidence: 99%

“…The denitrification efficiency was enhanced by designing three 2-pyrrolidone-based functionalized ILs combining different acidic anions [HSO 4 ] − , [H 2 PO 4 ] − , and [NO 3 ] − ([Pyr][HSO 4 ], [Pyr] [H 2 PO 4 ] , and [Pyr][NO 3 ]) for pyridine extraction from a model fuel comprising n -hexane and toluene with an extraction efficiency of 99.53%, 99.36%, and 95.02% respectively (optimized extraction conditions: the mass ratio of solvent to fuel = 1:5, initial content for N-containing compound = 5 wt %, and extraction time = 30 min). The mechanism of denitrification based on QC calculations showed that the magnitude of intermolecular interaction between functionalized ILs and pyridine was in the order of [Pyr][HSO 4 ] > [Pyr][H 2 PO 4 ] > [Pyr][NO 3 ], consistent with the experimental EDN activity.…”

Section: Heterocyclic Compound Extraction Using Ilsmentioning

confidence: 99%

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Hydrocarbon Extraction with Ionic Liquids

Yu,

Dai,

Liu

et al. 2024

Chem. Rev.

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Separation and reaction processes are key components employed in the modern chemical industry, and the former accounts for the majority of the energy consumption therein. In particular, hydrocarbon separation and purification processes, such as aromatics extraction, desulfurization, and denitrification, are challenging in petroleum refinement, an industrial cornerstone that provides raw materials for products used in human activities. The major technical shortcomings in solvent extraction are volatile solvent loss, product entrainment leading to secondary pollution, low separation efficiency, and high regeneration energy consumption due to the use of traditional organic solvents with high boiling points as extraction agents. Ionic liquids (ILs), a class of designable functional solvents or materials, have been widely used in chemical separation processes to replace conventional organic solvents after nearly 30 years of rapid development. Herein, we provide a systematic and comprehensive review of the state-of-the-art progress in ILs in the field of extractive hydrocarbon separation (i.e., aromatics extraction, desulfurization, and denitrification) including (i) molecular thermodynamic models of IL systems that enable rapid large-scale screening of IL candidates and phase equilibrium prediction of extraction processes; (ii) structure–property relationships between anionic and cationic structures of ILs and their separation performance (i.e., selectivity and distribution coefficients); (iii) IL-related extractive separation mechanisms (e.g., the magnitude, strength, and sites of intermolecular interactions depending on the separation system and IL structure); and (iv) process simulation and design of IL-related extraction at the industrial scale based on validated thermodynamic models. In short, this Review provides an easy-to-read exhaustive reference on IL-related extractive separation of hydrocarbon mixtures from the multiscale perspective of molecules, thermodynamics, and processes. It also extends to progress in IL analogs, deep eutectic solvents (DESs) in this research area, and discusses the current challenges faced by ILs in related separation fields as well as future directions and opportunities.

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Section: Extractive Denitrification (Edn) Using Ilsmentioning

confidence: 99%

Section: Heterocyclic Compound Extraction Using Ilsmentioning

confidence: 99%