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Separations
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Ionic Liquids in Separation Technology
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Ionic Liquids in Separation Technology

A special issue of Separations (ISSN 2297-8739). This special issue belongs to the section "Materials in Separation Science".

Deadline for manuscript submissions: closed (31 December 2022) | Viewed by 1568

Special Issue Editor

Prof. Dr. Junfeng Wang

E-Mail Website
Guest Editor
Beijing Key Laboratory of Ionic Liquids Clean Process/State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
Interests: preparation of ionic liquid membrane and research on gas separation; preparation of composite membrane based on nanoparticles, and research on carbon dioxide capture mechanism; preparation of amine ionic liquid and research on the preparation of anhydrous magnesium chloride; determination and simulation; AspenPlus-based simulation of phase equilibrium data and process design

Special Issue Information

Dear Colleagues,

In recent decades, ionic liquids (ILs) have been used extensively in many separation processes due to their special properties, such as the separation of various components using IL as the green extractant or adsorbent, the dissolution and regeneration of fiber with IL as the green solvent, etc.

Considering the great efforts made by various research groups in the design and synthesis of functionalized ILs for the separation or recycling of value components, I invite you to contribute to this Special Issue of Separations, dedicated to “Ionic Liquids in Separation Technology”, with original research articles and reviews.

With your rich expertise in the field of analytical chemistry, I believe that your contribution to this Special Issue will definitely have a significant impact on the entire scientific research community.

Prof. Dr. Junfeng Wang
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Separations is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • ionic liquid
  • separation
  • purification
  • recycle
  • membrane
  • extraction

Published Papers (1 paper)

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Research

15 pages, 1210 KiB  
Article
Investigation of Imidazolium-Based Ionic Liquids as Additives for the Separation of Urinary Biogenic Amines via Capillary Electrophoresis
by Natalia Kaczmarczyk, Natalia Treder, Piotr Kowalski, Alina Plenis, Anna Roszkowska, Tomasz Bączek and Ilona Olędzka
Separations 2023, 10(2), 116; https://doi.org/10.3390/separations10020116 - 7 Feb 2023
Cited by 2 | Viewed by 1156
Abstract
Ionic liquids (ILs), such as imidazoles, can be used to prevent the sorption of analytes onto the walls of the capillary. Prior works have confirmed that coating the capillary wall with a cationic layer can increase its surface stability, thereby improving the repeatability [...] Read more.
Ionic liquids (ILs), such as imidazoles, can be used to prevent the sorption of analytes onto the walls of the capillary. Prior works have confirmed that coating the capillary wall with a cationic layer can increase its surface stability, thereby improving the repeatability of the separation process. In this study, micellar electrokinetic chromatography (MEKC) is employed to evaluate how two ILs with different anions—namely, 1-hexyl-3-methylimidazolium chloride [HMIM+Cl−] and 1-hexyl-3-methylimidazolium tetrafluoroborate [HMIM+BF4−]—affect the separation efficiency for biogenic amines (BAs) such as metanephrine (M), normetanephrine (NM), vanilmandelic acid (VMA), and homovanillic acid (HVA) in urine samples. To this end, solid-phase extraction (SPE) is employed using different sample pH values, with the results demonstrating that HVA and VMA is easily extracted at a sample pH of 5.5, while a sample pH of 9.0 facilitated the extraction of M and NM. In the applied SPE protocol, selected analytes were isolated from urine samples using hydrophilic–lipophilic-balanced (HLB) columns and eluted with methanol (MeOH). The validation data confirmed the method’s linearity (R2 > 0.996) for all analytes within the range of 0.25–10 µg/mL. The applicability of the optimized SPE-MEKC-UV method was confirmed by employing it to quantify clinically relevant BAs in real urine samples from pediatric neuroblastoma (NBL) patients. Full article
(This article belongs to the Special Issue Ionic Liquids in Separation Technology)
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