Article
Thermodynamics
Di-Wei Chen, Chen Zhang, Zhen-Yu Zhang, Xiao-Ming Peng, Rui-Zhen Ren, Ming-Lan Ge
Summary: This study is a continuation of our previous research on determining the activity coefficients at infinite dilution (γ i infinity) for organic solutes (i) in ionic liquids (ILs) and their application in separation processes. The γ i infinity values for 31 organic solutes were determined in the IL 1-heptyl-3-methylimidazolium chloride ([C7MIm]Cl) at six different temperatures using gas-liquid chromatography (GLC). The linear relationship between ln γ i infinity and 1/T was fitted with the Gibbs-Helmholtz equation. The molar excess thermodynamic functions and solubility parameters of [C7MIm]Cl were calculated, and the interaction between the solute and IL was quantified using the linear free energy relationship (LFER) model. The infinite dilution selectivity coefficients for n-hexane/benzene and cyclohexane/benzene separations were also calculated and compared with literature values for [Cl]-based ILs.
FLUID PHASE EQUILIBRIA
(2023)
Article
Chemistry, Physical
Hiroshi Abe, Fumiya Nemoto, Kosuke Hiroi, Shinichi Takata
Summary: Nanoconfined water and ionic liquid crystals (ILCs) were observed in a hydrophilic ionic liquid (IL)-D2O system. The phase diagram of [C10mim][NO3]-D2O was determined using X-ray and neutron scattering techniques. The lyotropic ILCs of [C10mim][NO3] with 70-90 mol% D2O were formed at room temperature, and transformed into water pocket at high temperature.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Physical
Hiroshi Abe, Hiroaki Kishimura
Summary: The cooling-rate dependent multistep phase transition of 1-decyl-3-methylimidazolium nitrate ([C10mim] [NO3]) at low temperature was investigated, revealing the influence of cooling rate on the phase transition process.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Automation & Control Systems
Dingchao Fan, Wenguang Zhu, Yusen Chen, Ke Xue, Tianxiong Liu, Peizhe Cui, Jianguang Qi, Zhaoyou Zhu, Yinglong Wang
Summary: In this study, deep learning models were used to predict the infinite dilution activity coefficient for ionic liquid-solute systems. The models were constructed using a large dataset and parameters were optimized using Bayesian optimization algorithm and cross validation. The results showed a high agreement between the predicted values and experimental values.
ENGINEERING APPLICATIONS OF ARTIFICIAL INTELLIGENCE
(2023)
Article
Chemistry, Physical
Faiz Warsi, Mohd Usman, Maroof Ali
Summary: This study investigates the interaction between DTAC and SDS, two conventional surfactants, with IL in aqueous medium, as well as the influence of temperature on their aggregation behavior. By measuring the CMC values and thermodynamic parameters, the effect of IL on aqueous surfactant solutions is revealed, and the use of Fourier transform infrared spectroscopy allows for the exploration of structural changes in the mixed system.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Engineering, Chemical
Thomas Brouwer, Sascha R. A. Kersten, Gerrald Bargeman, Boelo Schuur
Summary: This study provides an open-source database with a large number of γ∞(i) data points, and utilizes the Van 't Hoff equation for data analysis and extrapolation. The γ∞(i) for five solutes in different solvents were compared, visualizing trends between solvent structure and γ∞(i).
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Review
Biochemical Research Methods
Colin F. Poole, Sanka N. Atapattu
Summary: Gas chromatography has advantages over conventional methods in measuring the physicochemical properties of ionic liquids, such as high accuracy and speed, as well as the ability to measure impure samples. In addition, most laboratories have general purpose gas chromatography instruments available, eliminating the need to purchase more specific instruments. Various physicochemical properties of ionic liquids can be accessed using gas chromatography, including gas-liquid partition constants, thermal stability, and catalytic properties.
JOURNAL OF CHROMATOGRAPHY A
(2021)
Review
Energy & Fuels
Alba Somoza, Alberto Arce, Ana Soto
Summary: The main advantages of using ionic liquids in enhanced oil recovery are their tunability and stability in harsh environmental conditions. This comprehensive review focuses on core flooding experiments and presents promising results with up to 32% additional oil recovery. Most studies have been conducted on sandstone reservoirs, with limited research on carbonate cores. The application of a new room temperature surface active ionic liquid shows a significant reduction in water/oil interfacial tension and a recovery increase of 10.5% in carbonate reservoirs. Combining this method with polymer flooding reduces costs while maintaining significant recovery.
Article
Chemistry, Physical
Seyyed Mohammad Arzideh, Kamyar Movagharnejad, Mohsen Pirdashti
Summary: A novel quaternary aqueous biphasic system composed of 1-decyl-3-methylimidazolium chloride, 2-propanol, and dipotassium hydrogen phosphate was investigated for its partition behavior of L-tryptophan and vanillin at different mass ratios. The ion-association and solvation behavior of the ionic liquid in the solution were studied using electrical conductivity measurement and analyzed with the low-concentration chemical model. The hybrid ion-interaction and solvation model coupled with the UNIQUAC model provided insights into the ion-solvent interaction and partitioning of biomolecules, showing good agreement with experimental data.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Physical
V. A. Elterman, P. Yu. Shevelin, L. A. Yolshina, A. V. Borozdin
Summary: The density, viscosity, and specific conductivity of AlCl3-[EMIm]Cl and AlCl3-[BMIm]Cl ILs were measured, and the molar concentrations of ions were calculated. The study confirmed the additivity of densities and molar volumes and identified the main factors affecting specific conductivity in acidic ILs.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Polymer Science
Yuhui Xie, Xue Lv, Xinyi Sui, Song Tian, Li'an Jiang, Shulin Sun
Summary: Physicochemical double cross-linking nanocomposite hydrogels were prepared in this study. The addition of ionic liquid prevented Laponite from forming a high thixotropic gel in water. The dispersed Laponite nanosheets acted as dynamic physical crosslinking sites and formed a strong and tough hydrogel network structure when combined with the chemical crosslinking center of MBA in the polymer chain segments. The PAM/Laponite/IL nanocomposite hydrogel showed excellent tensile strength, high tensile strain, and remarkable toughness, making it a potential load-bearing material.
Article
Energy & Fuels
Sergio M. Vilas-Boas, Monia A. . R. . Martins, Fabio R. . Tentor, Gabriel Teixeira, Juliana G. Sgorlon, Joao A. . P. Coutinho, Olga Ferreira, Simao P. Pinho
Summary: This study investigated the potential of imidazolium chloride ionic liquids (ILs) as separation agents in chemical separations. The activity coefficients were calculated to determine the selectivities, capacities, and solvent performance indices of different imidazolium chloride ILs. The results showed that the proportion of cations containing larger alkyl chains can be adjusted to meet specific purposes, and the COSMO-RS thermodynamic model was found to be a promising tool for qualitative screening of potential separation agents.
Article
Biochemistry & Molecular Biology
Wenbo Li, Yilin Wang, Dongchen Li, Jiachi Jiang, Kunlan Li, Kaili Zhang, Qingda An, Shangru Zhai, Ligang Wei
Summary: The oxidative depolymerization of alkali lignin in the [C(2)C(1)im]OAc system under mild conditions was successful, with the addition of water further improving reaction efficiency. The system allowed for the breakdown of specific inter-unit linkages of lignin, resulting in residual lignin with low molecular weight and narrow polydispersity index. The [C(2)C(1)im]OAc-based system proved to be a simple and efficient catalytic system for lignin oxidative depolymerization.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Chemistry, Physical
Yoshihiro Koyama, Seiya Shimono, Hiroaki Kishimura, Takahiro Takekiyo, Yukihiro Yoshimura, Hiroshi Abe, Kiyoto Matsuishi
Summary: The high-pressure crystal polymorph of a fluorinated ionic liquid was determined through X-ray diffraction and Raman spectroscopy, revealing irreversible changes in crystal structure upon compression and decompression. Conformational variance/invariance of the ions in the Raman spectra corresponded to the high-pressure crystal polymorph, indicating a switch in conformational variance at a specific pressure point leading to a change in crystal system. The high-pressure crystal polymorph was shown to be entirely different from the low-temperature crystal polymorph.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Engineering, Chemical
Thomas Brouwer, Sascha R. A. Kersten, Gerrald Bargeman, Boelo Schuur
Summary: The method utilizes the Margules equation to predict vapor-liquid equilibria in ternary systems, providing accurate pre-selection for non-hydrogen bond donating mixtures and highly dissimilar mixtures. By identifying molecular solvents and potential alternative solvents, it offers realistic pre-selection outcomes for industrial applications. The method also highlights the potential of morpholinium and ammonium structures in increasing relative volatilities, with lower toxicity compared to other cations.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Pharmacology & Pharmacy
Mohammad Halayqa, Aneta Pobudkowska, Urszula Domanska, Maciej Zawadzki
EUROPEAN JOURNAL OF PHARMACEUTICAL SCIENCES
(2018)
Article
Thermodynamics
Urszula Domanska, Monika Karpinska, Michal Wlazlo, Maciej Zawadzki
FLUID PHASE EQUILIBRIA
(2018)
Article
Thermodynamics
Urszula Domanska, Anna Wisniewska, Zbigniew Dabrowski, Monika Karpinska
FLUID PHASE EQUILIBRIA
(2018)
Article
Thermodynamics
Marcin Durski, Prathieka Naidoo, Deresh Ramjugernath, Urszula Domanska
FLUID PHASE EQUILIBRIA
(2018)
Article
Thermodynamics
Andrzej Marciniak, Michal Wlazlo
JOURNAL OF CHEMICAL THERMODYNAMICS
(2018)
Article
Thermodynamics
Urszula Domanska, Monika Karpinska, Anna Wisniewska, Zbigniew Dabrowski
FLUID PHASE EQUILIBRIA
(2019)
Article
Chemistry, Physical
Mohammed Halayqa, Maciej Zawadzki, Urszula Domanska, Andrzej Plichta
JOURNAL OF MOLECULAR STRUCTURE
(2019)
Article
Thermodynamics
Urszula Domanska, Michal Wlazlo, Zbigniew Dabrowski, Anna Wisniewska
FLUID PHASE EQUILIBRIA
(2019)
Article
Thermodynamics
Marek Krolikowski, Marta Krolikowska, Hamed Hashemi, Paramespri Naidoo, Deresh Ramjugernath, Urszula Domanska
JOURNAL OF CHEMICAL THERMODYNAMICS
(2019)
Review
Engineering, Chemical
Urszula Domanska
Article
Thermodynamics
Marcin Durski, Paramespri Naidoo, Deresh Ramjugernath, Urszula Domanska
JOURNAL OF CHEMICAL THERMODYNAMICS
(2019)
Article
Thermodynamics
U. Domanska, M. Wlazlo, M. Karpinska
JOURNAL OF CHEMICAL THERMODYNAMICS
(2019)
Article
Chemistry, Physical
Kamil Paduszynski, Mikolaj Wiekowski, Marcin Okuniewski, Urszula Domanska
JOURNAL OF MOLECULAR LIQUIDS
(2019)
Article
Thermodynamics
Urszula Domanska, Marta Krolikowska, Aneta Pobudkowska, Marek Krolikowski, Mikolaj Wieckowski
FLUID PHASE EQUILIBRIA
(2019)
Article
Biochemistry & Molecular Biology
Marta Krolikowska, Marek Krolikowski, Urszula Domanska