Article
Chemistry, Analytical
Wenjin Li, Yunchang Fan, Sheli Zhang, Jing Li, Lei Zhang, Hongwei Wu
Summary: The combination of ionic liquids (ILs) and microwave-assisted extraction (ILs-MAE) is a promising method for the efficient extraction of rosmarinic acid (RA) from Perilla seeds, showing high extraction efficiency and rapid extraction rate. The acidity of ILs and extraction temperature play important roles in the extraction process, and IL can be recycled without losing its extraction ability via back extraction with ethyl acetate.
MICROCHEMICAL JOURNAL
(2021)
Review
Engineering, Environmental
Jiajia Liu, Yingjie Xu
Summary: This paper presents the capacity and absorption mechanism of NOx absorption by ionic liquids (ILs), as well as strategies for enhancing NOx capacity through functionalized ILs. The active N or O sites in functionalized ILs react with the dimer of NO (N2O2), resulting in high absorption capacity. In addition, ILs with [NO3](-) show better performance in catalyzing NO conversion into HNO3 due to their strong oxidization capability.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Physical
Maria B. Martini, Jose L. Fernandez, Claudia G. Adam
Summary: This research demonstrates the relationship between the amount of free sulfuric acid and the activity of sulfonic-acid-functionalized ionic liquids as acid catalysts for transesterification reactions. The addition of sulfonic acid groups significantly enhances the catalytic activity of the ionic liquids. These sulfonic acid functionalized ionic liquids act as reservoirs for releasing free acid during the reaction, serving as the actual acid catalyst. The non-sulfonic ILs, on the other hand, show lower catalytic activities at room temperature due to their limited free acid content, which can be improved by raising the reaction temperature.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Wataru Yoshida, Masahiro Goto
Summary: The study examined the effects of structural modification on the performance of APILs as rhodium(iii) extractants, with [3 degrees C2P444][Cl] showing outstanding performance in extracting rhodium(iii) from HCl solution.
Article
Chemistry, Physical
Madhur Babu Singh, Pallavi Jain, Preeti Chaudhary, Indra Bahadur, Kashmiri Lal, Vinod Kumar, Prashant Singh, Himani, Anirudh Pratap Singh Raman
Summary: Ionic liquids (ILs) have a wide range of features, uses, and environmentally friendly nature, making them potential substitutes for organic solvents in addressing pollution. ILs possess unique thermal, physical, chemical, and biological properties, which can be modified by altering their cationic and anionic parts. Their applications in protein stabilization, organic transformation, nanomaterials, etc., indicate their significant impact on research and development.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Applied
Qiang Li, Yulan Hu, Bingjian Zhang
Summary: This study successfully synthesized two tetraalkylphosphonium polyoxometalate ionic liquids with excellent antibacterial activity and prepared hydrogels containing these ILs, showing that hydrogels with higher chitosan content exhibit better antibacterial efficacy. This may provide a new strategy for combating bacterial communities colonizing ancient artworks.
CARBOHYDRATE POLYMERS
(2021)
Article
Chemistry, Physical
Claudio Ferdeghini, Andrea Mezzetta, Felicia D'Andrea, Christian Silvio Pomelli, Lorenzo Guazzelli, Luca Guglielmero
Summary: This study provides a preliminary comparative evaluation of the effect of linker chain length and the size of aliphatic ammonium rings on the thermal and solubility properties of bromide dicationic ionic liquids.
Article
Chemistry, Physical
Dawid Lisicki, Dorota Talik, Beata Orlinska
Summary: Nicotinic acid is a commonly used additive in feed, breakfast cereals, and beverages. The current manufacturing process is not environmentally friendly, so alternative methods need to be explored. This paper presents research on the selective oxidation of 3-picoline to produce nicotinic acid using bromide organic salts as catalysts in acetic acid solution.
Article
Metallurgy & Metallurgical Engineering
Masahiko Matsumiya, Daiki Nomizu, Yusuke Tsuchida, Yuji Sasaki
Summary: The study investigated the synergistic solvent extraction mechanism of lanthanide(III) using a mixture of D2EHPA and MIDPA in phosphonium-based ionic liquid, finding that the complex formed with the synergistic effect was more stable. Thermodynamic analysis revealed that the synergistic extraction reaction is endothermic. Furthermore, the study explored the potential for separating Dy(III) from Pr(III) and Nd(III) based on their separation factors.
Article
Biochemistry & Molecular Biology
Emiliano Cornejo Robles, Octavio Olivares-Xometl, Natalya V. Likhanova, Paulina Arellanes-Lozada, Irina V. Lijanova, Victor Diaz-Jimenez
Summary: In this study, 15 ionic liquids (ILs) derived from quaternary ammonium and carboxylates were synthesized and characterized. Their evaluation as corrosion inhibitors (CIs) for API X52 steel in 0.5 M HCl was conducted. Potentiodynamic tests showed that the inhibition efficiency (IE) varied with the chemical configuration of the anion and cation. The ILs were found to be mixed-type CIs and the IE was directly proportional to the CI concentration. Surface analysis by scanning electron microscopy confirmed the reduced steel damage in the presence of CI due to the inhibitor-metal interaction.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Engineering, Mechanical
Qiangliang Yu, Chaoyang Zhang, Rui Dong, Yijun Shi, Yurong Wang, Yanyan Bai, Jiaying Zhang, Meirong Cai, Feng Zhou, Weimin Liu
Summary: The study demonstrates that halogen-free dicationic ionic liquids exhibit excellent friction-reducing and anti-wear properties, especially at high temperatures. Analysis of worn surfaces reveals that the effectiveness of ILs is attributed to the formation of high quality tribofilms consisting of both tribochemical reaction and ordered absorption films.
Article
Engineering, Chemical
Ziwei Lv, Peng Xue, Ting Xie, Jingxuan Zhao, Song Tian, Hongxu Liu, Yuchao Qi, Shulin Sun, Xue Lv
Summary: The deterioration of water environment poses a serious threat to the sustainable society, emphasizing the urgent need for an antifouling film capable of removing both dyes and oil/water. In this study, a series of ionic liquids (ILs) with different chain length were prepared to modify Na-montmorillonite (Na+ MMT) and blended with polyvinylidene fluoride (PVDF) using blending technology. The resulting ILs-Na+ MMT film exhibited excellent hydrophilic and separation performance, making it suitable for the separation of dye and emulsion wastewater through phase transformation method.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Chemical
Oh. Kyung Choi, Hae Chan Lim, Yeongrae Cho, Art E. Cho, Hasan Al Abdulgader, George P. Lithoxoos, Hassan A. Aljama, Seung-Hak Choi, Young Chul Choi, Jae Woo Lee
Summary: Room-temperature ionic liquids (RTILs) are promoted as green alternatives to volatile organic solvents due to their low volatility and wide range of applications. This study investigated the optimal combination of cationic and anionic RTILs for desalination, and found that RTILs containing Tf2N anions showed the most promising desalination potential. Imidazolium-based RTILs performed better than phosphonium-based RTILs in experiments, with [BMIM][Tf2N] recommended as a candidate desalination solvent.
Article
Biochemistry & Molecular Biology
Andrea Amadei, Andrea Ciccioli, Antonello Filippi, Caterina Fraschetti, Massimiliano Aschi
Summary: A theoretical-computational procedure based on the quasi-Gaussian entropy theory and molecular dynamics simulations is proposed. It can construct an analytical model of the most relevant thermodynamic properties within a wide temperature range by automatically sampling the entire conformational repertoire of highly flexible systems. The method's reliability mainly depends on the quality of the force field used in the simulations and the ability to distinguish between semi-classical and quantum degrees of freedom in a physically coherent way.
Article
Engineering, Chemical
Yan Li, Shen-Hui Li, Li-Hao Xu, Heng Mao, Ao-Shuai Zhang, Zhi-Ping Zhao
Summary: In this study, ionic-liquids-decorated halloysite nanotubes (ILs@HNTs) composites were embedded into PDMS matrix to fabricate mixed matrix membranes (MMMs) for the selective pervaporation of ethyl acetate (EtAc) from aqueous solutions. The MMMs loaded with ILs@HNTs exhibited remarkable separation factors and high flux compared to pristine PDMS membranes, benefiting from the synergistic effect of highly permeable HNTs and highly selective ILs. Molecular simulations provided theoretical support for the experimental results, and the effects of different factors on the pervaporation performance of the MMMs were systematically investigated. The unique modification method developed in this study can be applied to other tubular materials and provides valuable guidelines for designing high-performance membrane structures.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Chemical
Andrea Coletto, Pietro Poesio
Summary: Experiments and simulations were conducted to study the air volume fraction and hold-up in a bubble channel reactor. A new signal processing method was proposed to avoid the loss of bubble residence time. The results were in agreement with previous studies and a bubble-scale model was developed to explain the relationship between hold-up and air superficial velocity.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2024)
