Article
Physics, Applied
H. J. Huseynov
Summary: This study focused on the extraction dearomatization of the kerosene fraction using ionic liquids synthesized from formic acid, morpholine, acetic acid, and diethylamine as a selective solvent. Various factors influencing the selective purification process were investigated, and the hydrocarbon composition of the dearomatized kerosene raffinate samples was determined through IR and UV spectral analysis.
MODERN PHYSICS LETTERS B
(2021)
Article
Multidisciplinary Sciences
Hui Cao, Qiang Cheng, Armido Studer
Summary: This article introduces a highly selective method for functionalization of pyridines at the meta position, achieving trifluoromethylation, perfluoroalkylation, chlorination, bromination, iodination, nitration, sulfanylation, and selenylation through a dearomatization-rearomatization process. The method can be applied for late-stage functionalization of drugs.
Article
Engineering, Chemical
Hui Yu, Xinyu Li, Chuanqi Geng, Xiaojia Wu, Fan Zhang, Shichao Tian, Zhiyong Zhou, Zhongqi Ren
Summary: In this study, a series of N-methylpyrrolidone (NMP)-based coordinated ionic liquids (ILs) with different metal salts were synthesized and their performance in separating aromatic and aliphatic hydrocarbons was investigated. Among them, NMP-0.1Fe(NO3)(3)center dot 9H(2)O showed high selectivity and successfully separated toluene from n-heptane or cyclohexane. Experimental and modeling results confirmed the potential industrial applications of NMP-0.1Fe(NO3)(3)center dot 9H(2)O.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Energy & Fuels
Parimala Muniandy, Anantharaj Ramalingam
Summary: The ternary liquid-liquid equilibrium (LLE) for eight systems containing [EMIM][EtSO4] and [EMPy][EtSO4] at 298.15 K was investigated, with the experimental data showing a good fit. The NRTL and UNIQUAC models were successfully used to correlate the experimental LLE data, with high distribution coefficients and selectivity obtained for the studied systems.
PETROLEUM SCIENCE AND TECHNOLOGY
(2022)
Article
Engineering, Chemical
Pablo Navarro, Daniel Moreno, Marcos Larriba, Julian Garcia, Francisco Rodriguez, Roberto I. Canales, Jose Palomar
Summary: There is a lack of knowledge on comprehensive studies of ionic liquids and extraction processes. This study applies the computational COSMO-based/Aspen multiscale methodology to analyze a wide set of 100 common ILs in the aromatic/aliphatic separation field. The analysis reveals the evolution from extractive properties to extractor behavior, the influence of the model's rigor, the role of IL at commercial specifications, and the role of the separation train.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Environmental
Yan Gao, Liangting Cheng, Ruimin Gao, Guangfa Hu, Jianshe Zhao
Summary: The study involves designing and preparing new polyionic liquid catalyst based on polyoxometalates, which shows high desulfurization activity. Additionally, supported catalysts were synthesized by loading polyoxometalate derivatives on the surface of graphene oxide, demonstrating excellent activity and recyclability in extraction-oxidation desulfurization.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Engineering, Chemical
Tarek Lemaoui, Yacine Benguerba, Ahmad S. Darwish, Farah Abu Hatab, Samah E. E. Warrag, Maaike C. Kroon, Inas M. Alnashef
Summary: This study investigated the application of deep eutectic solvents (DESs) in the simultaneous dearomatization, desulfurization, and denitrogenation of fuels, particularly diesel. It found that acidic DESs can effectively remove pyrrole and pyridine, and achieve high extraction efficiencies for toluene and thiophene.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Chemical
Qinghua Liu, Guoxuan Li, Chengmin Gui, Zhigang Lei
Summary: Liquid-liquid extraction is an effective method to reduce the content of aromatics in fluid catalytic cracking (FCC) diesel and improve oil quality. In this study, [EMIMj[NTF(2)j was selected as the most suitable extractant, and its high selectivity and good recycling performance were confirmed through experiments and calculations.
CHEMICAL ENGINEERING SCIENCE
(2022)
Article
Chemistry, Physical
Ahmad S. Darwish, Farah Abu Hatab, Tarek Lemaoui, Omar A. Z. Ibrahim, Ghaiath Almustafa, Botagoz Zhuman, Samah E. E. Warrag, Mohamed K. Hadj-Kali, Yacine Benguerba, Inas M. Alnashef
Summary: Eutectic solvents have been studied for fuel purification, with this work focusing on the extraction of multiple aromatics from n-decane using a salt-acid-based ES. Experimental and theoretical studies showed different extraction mechanisms for different impurities, with full recovery achieved for pyrrole and quinoline after 2 stages of extraction and lower efficiencies for thiophene and toluene.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Multidisciplinary
Santosh R. P. Bandlamudi, Jimmie L. McGehee, Albaraa D. Mando, Mohammad Soltani, C. Heath Turner, James H. Davis, Kevin N. West, Brooks D. Rabideau
Summary: The study explores the behavior of hydrocarbons when mixed with a thermally robust ionic liquid, showing that hydrocarbons with a predominant aromatic character readily mix with the IL, while those with a predominant aliphatic character are largely immiscible. Molecular dynamics simulations reveal the expansion of the IL network and the nature of the ion-rich phase, shedding light on the interactions between hydrocarbons and the IL.
Article
Chemistry, Physical
Chao Sun, Yanli Zhang, Yasen Dai, Jiafu Xing, Yajuan Qu, Yinglong Wang, Jun Gao
Summary: Ionic liquids are used as extractants to efficiently and environmentally separate the azeotrope of ethyl acetate and ethanol. Through mechanism analysis, four ILs are selected as extractants and their separation performance is verified through experiments.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Physical
K. K. Thasneema, T. Dipin, M. Shahin Thayyil, Pramod K. Sahu, Mouslim Messali, Tancia Rosalin, K. K. Elyas, P. M. Saharuba, T. Anjitha, Taibi Ben Hadda
Summary: This study focused on the development of three phosphonium based room temperature ionic liquids (RTILs) for the extraction of toxic textile dyes, heavy metals, and phenolic compounds. The ILs showed potential for removal of pollutants, with adsorption of dyes increasing with contact time and achieving maximum decolorization at acidic pH and pH 7. The ILs also demonstrated efficient extraction of heavy metals and dyes, and phenolic compounds from industrial waste water. The thermal stability and non-toxicity of the ILs were examined, showing promising results for various technological applications.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Inorganic & Nuclear
Li Zhao, Shuliang Chen, Xianzhi Hu, Futing Zi
Summary: Gold adsorption from thiosulfate solution using azole-functionalized microspheres (PS-3-AT) was studied. PS-3-AT effectively adsorbed Au(i)-thiosulfate complex with an adsorption capacity of 39.8 kg/t. Adsorption kinetics and isotherm studies showed that the adsorption process was exothermic and could be described by the pseudo-second-order and Freundlich models. Characterization techniques demonstrated the formation of -NH+Cl- group during the grafting process, and interaction between PS-3-AT and Au(S2O3)(2)(3-) at an atomic level was visualized. PS-3-AT could be regenerated and maintained satisfactory performance after five cycles. The facile synthetic method and adsorption properties of PS-3-AT have significant implications for thiosulfate gold leaching technologies.
DALTON TRANSACTIONS
(2023)
Article
Engineering, Chemical
Yiota-Victoria Phakoukaki, Paul O'Shaughnessy, Panagiota Angeli
Summary: The experimental study on the continuous extraction of an amino acid from an aqueous solution into an ionic liquid phase demonstrated a double intensification of the solvent used and the overall process. Efficient extraction of the amino acid into the ionic liquid with high mass transfer coefficients was achieved in small channels, indicating promising potential for industrial applications.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Chemical
Zhiyuan Zeng, Xiang Su, Yun Gao, Gaoshan Yu, Shuainan Ni, Jia Su, Xiaoqi Sun
Summary: By functionalizing the cation of ionic liquid, a novel bifunctional ionic liquid [N888DOPE][C272] was developed to separate Lutetium from mixed solution. The IL exhibited superior extraction ability, maximum load capacity and selectivity for Lu(III) compared to unphosphonate-functionalized ionic liquid. The extraction mechanism of [N888DOPE][C272] was identified as an ion association through infrared spectra analysis.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
