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
Kenneth R. Harris, Mitsuhiro Kanakubo
Summary: This article reports high-pressure self-diffusion and electrical conductivity data for the ionic liquid reference material, and compares the results with viscosity measurements. The study also applies density scaling to the transport property measurements and compares them with earlier studies on ionic liquid systems.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Energy & Fuels
Yifeng Chen, Shuailong Song, Ning Li, Jian Wu, Xiaohua Lu, Xiaoyan Ji
Summary: The development of a novel absorbent for CO2 separation technology was investigated in this study. The experimental results showed that the developed technology had a significantly higher CO2 mass-transfer rate and lower cost compared to current commercialized technology. The absorption ability index successfully predicted the performance of CO2 separation technologies.
Article
Chemistry, Physical
Zufar Zaripov, Ruslan R. Nakipov, Farid M. Gumerov, Slawomir Boncel, Marzena Dzida, Ilmutdin M. Abdulagatov
Summary: This study reports the experimental thermal conductivities and derived properties of the ionic liquid [EMIM][SCN] at different temperatures and pressures. The results show a weak linear decrease in thermal conductivity with temperature and the effect of pressure on thermal conductivity. The experimental data are in good agreement with previous reported data.
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
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)
Article
Thermodynamics
Yifeng Chen, Zhengxing Dai, Xiaoyan Ji, Xiaohua Lu
Summary: This study measured CO2 solubilities in different hybrid absorbents, quantifying the contribution of the confinement effect and establishing the relationship between surface roughness and molecular parameters. The results showed that a specific hybrid absorbent is promising for CO2 separation based on CO2 absorption capacity and enthalpy.
FLUID PHASE EQUILIBRIA
(2021)
Article
Thermodynamics
Dorota Warminska, Iwona Cichowska-Kopczynska
Summary: This work investigates the physicochemical properties of three binary mixtures containing ionic liquids mixed with 2-propanol. The effects of temperature, cation, and anion on properties such as density, speed of sound, refractive index, and viscosity were analyzed. Excess properties were calculated and correlated with composition data using the Redlich-Kister polynomial equation.
JOURNAL OF CHEMICAL THERMODYNAMICS
(2022)
Article
Engineering, Chemical
Yifeng Chen, Hang Yu, Jingjing Chen, Xiaohua Lu, Xiaoyan Ji
Summary: In this study, the viscous behaviors of slurry, [Hmim][NTf2]/TiO2-PEG200, were experimentally determined. The slurry exhibited shear-thinning behavior and high temperature and low solid content were found to reduce its viscosity. The presence of [Hmim][NTf2] effectively reduced the viscosity of the slurry. Additionally, increasing temperature reduced the pressure drop of the slurry with a solid content of 8.0% (mass) by 28.0% when it increased from 313 to 333 K.
CHINESE JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Nanoscience & Nanotechnology
Farzin Rahmani, Paul Scovazzo, Melissa A. Pasquinelli, Sasan Nouranian
Summary: The study revealed that nanoconfinement of a highly CO2/CH4-selective ionic liquid ([EMIM][SCN]) in porous poly(vinylidene fluoride) (PVDF) matrices can enhance the gas separation performance of membranes. Experimental and simulation results show that decreasing the IL nanoconfinement length can suppress CH4 sorption and increase CO2 affinity to nonpolar PVDF surfaces. Analysis of the IL charge/density distribution in PVDF-confined regions provides insights for better molecular design of membranes for critical gas separation and CO2 capture applications.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Energy & Fuels
A. D. T. Medagedara, N. M. Waduge, T. M. W. J. Bandara, I. G. K. J. Wimalasena, M. Dissanayake, K. Tennakone, R. M. G. Rajapakse, C. P. Rupasinghe, G. R. A. Kumara
Summary: Organic solvents are commonly used in supercapacitors as electrolytes, but their drawbacks include high volatility, toxicity, and environmental issues. In this study, a novel and low-cost ionic liquid based on triethylammonium cation and thiocyanate anion was synthesized and used as the electrolyte in a low-cost supercapacitor. The electrode material used was electronically conducting activated carbon derived from cleaned coconut shells. The temperature dependence of electrolyte conductivity was investigated, and the ion transport kinetics behaved according to the Vogel-Tammann-Fulcher (VTF) model. The optimized electrode fabrication method resulted in the highest specific capacitance in the supercapacitor assembly.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Chemistry, Physical
Daniel C. Morris, Stuart W. Prescott, Jason B. Harper
Summary: The study examined a series of ionic liquids based on 1-alkyl-3-methylimidazolium cations as components of a solvent mixture for a bimolecular substitution process. It found that changing the alkyl chain length or the amount of ionic liquid affected the rate coefficient of the process and NMR spin-spin relaxation of the solvent components. The study also determined that the activation parameters showed a step change when increasing the alkyl chain length, suggesting notable structuring in solution.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
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
Marta Krolikowska, Maciej Zawadzki, Michal Skonieczny
JOURNAL OF MOLECULAR LIQUIDS
(2018)
Article
Thermodynamics
Urszula Domanska, Monika Karpinska, Anna Wisniewska, Zbigniew Dabrowski
FLUID PHASE EQUILIBRIA
(2019)
Article
Chemistry, Physical
Marta Krolikowska, Tadeusz Hofman
JOURNAL OF MOLECULAR LIQUIDS
(2019)
Article
Thermodynamics
Marta Krolikowska, Maciej Zawadzki, Tomasz Kuna
THERMOCHIMICA ACTA
(2019)
Article
Thermodynamics
Marta Krolikowska, Katarzyna Romanska
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
Marta Krolikowska, Kamil Paduszynski, Maciej Zawadzki
FLUID PHASE EQUILIBRIA
(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
