Article
Engineering, Chemical
Salvador Asensio-Delgado, Fernando Pardo, Gabriel Zarca, Ane Urtiaga
Summary: This article discusses the importance of recovering and reclaiming refrigerant gases, as well as the research on using ionic liquids for separating fluorinated gas mixtures. It provides a comprehensive compilation of data and process design directions for refrigerant families including chlorofluorocarbons, hydrofluoroolefins, and hydrochlorofluoroolefins.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Chemistry, Physical
Ning Ai, Xiaoting Huang, Caijin Zhou, Fengyan Lou, Qining Wang, Jisong Zhang, Jie Ren
Summary: This paper measures the solubility and diffusivity of CO2/C2H4 in four ionic liquids ([Emmim][Tf2N], [Pmmim][Tf2N], [Bmmim][Tf2N], and [Hmmim][Tf2N]) using a tube-in-tube reactor. A new device reduces the measurement time to a few minutes. The solubility data shows less than 10% deviation compared to previous reports, and the diffusivity data is determined within 3 minutes. Morgan's diffusivity correlation equation can predict the diffusion coefficient of CO2 in ionic liquids, while an empirical formula is developed for the diffusivity of C2H4 with less than 17% deviation between predicted and measured values. The measured solubility and diffusivity data, along with the correlations, can aid in the development of more efficient processes involving CO2/C2H4/ionic liquids system.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Physical
Chenglong Zhang, Jin Wu, Ruixue Wang, En Ma, Liang Wu, Jianfeng Bai, Jingwei Wang
Summary: Ionic liquids are promising solvents for the absorption of volatile organic compounds. By studying the effects of different structural features on solubility, potential solvents can be identified and the relationship between various interaction energy parameters and solubility can be determined. The study provides a fundamental basis and practical data for the control and treatment of VOCs.
GREEN ENERGY & ENVIRONMENT
(2021)
Article
Thermodynamics
S. Doblinger, D. S. Silvester, M. Costa Gomes
Summary: The solubilities of non-polar and polar gases in functionalized alkyl imidazolium ionic liquids were reported, showing that sulphur dioxide has the highest solubility. Oxygen is generally more soluble than hydrogen, and the molar volume of the ionic liquid and the presence of polar groups in the cation affect gas solubilities. None of the gases studied are chemically absorbed in the ionic liquids.
FLUID PHASE EQUILIBRIA
(2021)
Review
Medicine, Research & Experimental
Chunxia Liu, Bin Chen, Wei Shi, Wenlong Huang, Hai Qian
Summary: Ionic liquids (ILs) are nonmolecular compounds composed only of ions, which have a wide range of applications in various fields including pharmaceuticals. ILs have advantages such as wide chemical space, adjustable structures, and high thermal stability, making them potential candidates for drug delivery systems.
MOLECULAR PHARMACEUTICS
(2022)
Article
Chemistry, Physical
Haijun Feng, Pingan Zhang, Wen Qin, Weiming Wang, Huijing Wang
Summary: Machine learning algorithms are used to screen ionic liquids for capturing acid gases, and combining different algorithms can improve model accuracy in estimating gas absorption.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Physical
Hemayat Shekaari, Mohammed Taghi Zafarani-Moattar, Masumeh Mokhtarpour
Summary: This study investigated the extraction of curcuminoids (CURs) from turmeric using deep eutectic solvents (DESs) and ionic liquids (ILs) under ultrasound-assisted conditions. The maximum CURs amount was achieved using 50% water content DES or IL at 5% solid loading, with a power intensity of 50.8 W/cm(2) at 363 K for 60 minutes. The improved extraction method proved to be an economical, green, and effective alternative to traditional solvent extraction for CURs.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Physical
Ajay Kumar, Kamlesh Kumari, Sangeeta Singh, Indra Bahadur, Prashant Singh
Summary: Noscapine and its derivatives have shown potential as cough suppressant, anti-cancerous activity, and ability to inhibit the main protease of SARS-CoV-2 and chikungunya. This study focused on designing ionic liquids composed of noscapinium cation with different anions, and analyzing their thermo-chemical data, IR and UV-visible spectra, and ADME behavior. The most soluble and stable ionic liquid among the designed ILs was found to be (R)-5-((S)-4,5-dimethoxy-3-oxo-1,3-dihydroisobenzofuran-1-yl)-4-methoxy-6,6-dimethyl-5,6,7,8-tetrahydro-[1,3]dioxolo[4,5-g]isoquinolin-6-ium trifluoromethanesulfonate (IL4) based on DFT calculations.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Physical
Zongyang Liu, Xiao-Qiang Bian, Suling Duan, Lianguo Wang, Rayhanul Islam Fahim
Summary: In this study, machine learning methods were used to predict the solubility of carbon dioxide in ionic liquids. Experimental and simulated data were collected to train the models, and different machine learning algorithms were employed. The performance of the models was evaluated using various error indexes, and the results showed that the PSO-SVR model had the highest accuracy and the lowest time consumption.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Physical
Jean-Pierre Mbakidi, Florica Lazar, Luc Marchal, Eric Leroy, Sandrine Bouquillon
Summary: Paramylon is a water insoluble linear glucan produced by Euglena gracilis microalgae. It has a stable triple helix conformation and high crystallinity due to its macromolecular structure containing only b(1-3) linkages. The solubility of paramylon was evaluated using eco-friendly ionic liquids as solvents, and the structure and thermal properties of the biopolymer before and after solubilization and regeneration were discussed. (C) 2022 Elsevier B.V. All rights reserved.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Multidisciplinary
Hui Han, Man Zhang, Yingming Zhu, Kejing Wu, Yingying Liu, Binshen Wang, Houfang Lu, Bin Liang
Summary: The efficient separation of 5-HMF from DESs was achieved by four cycles of extraction using THF, with an overall extraction efficiency of more than 80.0% (30 degrees C). Additionally, the addition of 1 mol L-1 NaCl solution significantly improved the extraction efficiency from 30.0% to 42.0%. Furthermore, the recovery and reuse of the extractant proved to be effective, with a purity of 90.0% for 5-HMF in the recovered product and 97.0% THF in the recycled extractant. This study demonstrates an efficient and environmentally friendly method for separating and recovering 5-HMF while ensuring the reuse of the extractant.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Biochemistry & Molecular Biology
Tatyana S. Sazanova, Alsu I. Akhmetshina, Anton N. Petukhov, Andrey V. Vorotyntsev, Sergey S. Suvorov, Alexandra V. Barysheva, Amal Mechergui, Alexander V. Nyuchev, Olga V. Kazarina, Anna N. Stepakova, Maria E. Atlaskina, Artem A. Atlaskin, Sergey S. Kryuchkov, Ilya V. Vorotyntsev
Summary: This study investigates the solubility of acidic gases in ionic liquids with sterically hindered bulky anions, specifically bis(2-ethylhexyl) sulfosuccinate ([doc]), at low pressures. The effects of different cations (imidazolium, pyridinium, and pyrrolidinium) on the thermophysical properties and sorption capacities are also discussed. The densities and activation energies of the tested ILs show minimal differences. The COSMO-RS model is used to predict the free volumes of ILs and their influence on gas solubilities.
Article
Engineering, Chemical
Menad Nait Amar, Mohammed Abdelfetah Ghriga, Mohamed El Amine Ben Seghier, Hocine Ouaer
Summary: This study established rigorous models that can predict the solubility of N2O in ILs with high accuracy. The best predictive paradigm was found to be the CFNN model optimized using the LM algorithm, with a statistical validity of over 96%.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2021)
Article
Chemistry, Physical
Yingying Cao, Zhixing Wu, Ying Zhang, Yanrong Liu, Hui Wang
Summary: This study developed a method for screening ILs with high solvation capability for artemisinin, showing that artemisinin mainly interacts with ILs through hydrogen bonds. Experimental results demonstrated that better extraction efficiency can be achieved using the optimal IL, further verifying the accuracy of the simulation results.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Physical
Daniel Nuevo, Marc Cuesta, Raul Porcar, Andreu Andrio, Eduardo Garcia-Verdugo, Vicente Compan
Summary: Novel methyl sulfoxide imidazolium-based zwitterionic low melting salts were synthesized and characterized. The combination of these salts with lithium bis(trifluoromethylsulfonyl)amide (LiNTf2) at different molar ratios resulted in low melting mixtures with high ionic conductivity and thermal decomposition temperature. The activation energy showed different trends above and below the melting temperature, and the conductivity increased with the composition of the mixture. These materials are important for the development of devices with high ionic Li-ion conductivity.