2020 Vol. 5, No. 2

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Editorial
COIL-8: Ionic liquids for tomorrow
2020, 5(2) doi: 10.1016/j.gee.2020.05.008
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Research Highlight
Innovating ionic liquids as repairable electronics for liquid robots
Jianji Wang
2020, 5(2): 122-123. doi: 10.1016/j.gee.2020.04.005
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When I read the paper of “Crystal-Confined Freestanding Ionic Liquids for Reconfigurable and Repairable Electronics” that was published on Nature Communications (Nat. Commun. 2019, 10, 547), I felt excited as it led to a new application of ionic liquids in addition to the enormous studies on chemica...
Short communication
Efficient Knoevenagel condensation catalyzed by imidazole-based halogen-free deep eutectic solvent at room temperature
Hao Qin, Yishan Zhou, Qian Zeng, Hongye Cheng, Lifang Chen, Bingjian Zhang, Zhiwen Qi
2020, 5(2): 124-129. doi: 10.1016/j.gee.2019.11.002
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For the first time, we employed the halogen-free deep eutectic solvent (DES) into the Knoevenagel condensation between aromatic aldehydes and active methylene compounds at room temperature. The DESs [3Im:PTSA] and [4Im:PTSA] were prepared by imidazole (Im) andp-toluenesulfonic acid (PTSA), which wer...
Research paper
Dialkyl imidazolium acetate ionosilica as efficient and recyclable organocatalyst for cyanosilylation reactions of ketones
Thanh Tran Duy, Alysson Duarte Rodrigues, Giang Vo-Thanh, Peter Hesemann
2020, 5(2): 130-137. doi: 10.1016/j.gee.2020.03.005
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We report new heterogeneous organocatalyst based on silica hybrid supported N-heterocyclic carbene (NHC-) species. The organocatalyst is formed from an imidazolium iodide based ionosilica material, followed by iodide/acetate anion exchange. The imidazolium acetate generates the organocatalytic carbe...
Swelling acidic poly(ionic liquid)s as efficient catalysts for the esterification of cyclohexene and formic acid
Xin Wang, Sanguan Ma, Bihua Chen, Jingshun Zhang, Yongya Zhang, Guohua Gao
2020, 5(2): 138-146. doi: 10.1016/j.gee.2020.04.013
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Acidic poly(ionic liquid)s (PILs) with swelling ability were synthesized by free radical copolymerization of N-vinylimidazolium ionic liquids, divinylbenzene (DVB) and sodium acrylate (NaAA), and further acidification by sulfuric acid. The swelling ability of acidic PILs was greatly affected by cros...
Highly efficient synthesis of 1-methoxy-2-propanol using ionic liquid catalysts in a micro-tubular circulating reactor
Yu-Mei Liu, Yan Zhou, Wen-Qiang Gong, Zhang-Min Li, Chao-Li Wang, Duan-Jian Tao
2020, 5(2): 147-153. doi: 10.1016/j.gee.2019.09.001
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The catalysis of ionic liquids (ILs) in the traditional stirred reactor suffers from insufficient mass and heat transfer, which always needs a long reaction time and results in a low reaction rate. In this work, highly efficient synthesis of 1-methoxy-2-propanol via the alcoholysis reaction of propy...
A bifunctional and recyclable catalyst: Amine and ionic liquid grafting on MOFs for the one-pot synthesis of N-aryl oxazolidin-2-ones
Siying Chong, Tongtong Wang, Haijun Zhong, Lingfei Xu, Hailong Xu, Zhongwu Lv, Min Ji
2020, 5(2): 154-165. doi: 10.1016/j.gee.2020.04.001
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A bifunctional heterogeneous catalyst was designed and synthesized, denoted DMEDA/IL–NH2-MIL-101. The structure and physical-chemical characterization of DMEDA/IL–NH2-MIL-101 and its precursors were characterized by SEM, N2 adsorption-desorption, XPS, FT-IR, PXRD, elemental analysis, and TGA techniq...
Hexagonal boron nitride: A metal-free catalyst for deep oxidative desulfurization of fuel oils
Peiwen Wu, Linjie Lu, Jing He, Linlin Chen, Yanhong Chao, Minqiang He, Fengxia Zhu, Xiaozhong Chu, Huaming Li, Wenshuai Zhu
2020, 5(2): 166-172. doi: 10.1016/j.gee.2020.03.004
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Oxidative desulfurization (ODS) has been proved to be an efficient strategy for the production of clean fuel oil. Numerous metal-based materials have been employed as excellent ODS catalysts, but being hindered by their high-cost and potential secondary pollution. In this work, we employed graphene ...
Extractive denitrogenation of shale oil using imidazolium ionic liquids
Shurong Gao, Shengfan Fang, Ruozheng Song, Xiaochun Chen, Guangren Yu
2020, 5(2): 173-182. doi: 10.1016/j.gee.2020.04.002
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The potential applications of shale oil as a substitute energy source are adversely influenced due to its high nitrogen content. In this work, four imidazolium ionic liquids (ILs), i.e., 1-butyl-3-methylimidazolium chloride ([Bmim]Cl), 1-butyl-3-methylimidazolium acetate ([Bmim]Ac), 1-butyl-3-methyl...
Protic vs aprotic ionic liquid for CO2 fixation: A simulation study
Wenzhong Sun, Meichen Wang, Yaqin Zhang, Weilu Ding, Feng Huo, Li Wei, Hongyan He
2020, 5(2): 183-194. doi: 10.1016/j.gee.2020.04.004
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The cycloaddition of CO2 with epoxides catalyzed by ionic liquids (ILs) has been a widely ongoing studied hot topic over the years. Recent experimental research has shown that the protic ionic liquids (PILs) behave stronger hydrogen proton donating ability than aprotic ionic liquids (APILs), and can...
Design of functionalized fluorescent ionic liquid and its application for achieving significant improvements in Al3+ detecting
Lu Gan, Jiachen Guo, Siying Che, Qiaoxin Xiao, Mingyang Wang, Jienan You, Congmin Wang
2020, 5(2): 195-202. doi: 10.1016/j.gee.2020.03.006
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Specific fluorophore was introduced into ionic liquid based on its tunability, thus a kind of novel fluorescent ionic liquid probe [P66614][HQS] was designed, synthesized and characterized. Compared with non-fluorescent HQS, ionic liquid [P66614][HQS] emitted a certain amount of fluorescence, which ...
Construction of NH2-MIL-125(Ti)/Bi2WO6 composites with accelerated charge separation for degradation of organic contaminants under visible light irradiation
Sheng Yin, Yong Chen, Ming Li, Qingsong Hu, Yi Ding, Yifan Shao, Jun Di, Jiexiang Xia, Huaming Li
2020, 5(2): 203-213. doi: 10.1016/j.gee.2020.03.008
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Photocatalysis is considered as an ideal strategy for water pollution treatment. However, it remains challenging to design a highly efficient photocatalytic system through regulating the charge flow via a precise approach. In this work, a novel NH2-MIL-125(Ti)/Bi2WO6 composite was constructed via se...
Corrosion inhibiting performance and mechanism of protic ionic liquids as green brass inhibitors in nitric acid
Pengcheng Hu, Zhitao Wu, Junlin Wang, Yuqing Huang, Quanyou Liu, Shu-Feng Zhou
2020, 5(2): 214-222. doi: 10.1016/j.gee.2019.11.003
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Four protic ionic liquids (ILs) were synthesized via a one-step method by using benzotriazole (BTA) and benzimidazole as cations, and benzenesulfonic acid and 2-naphthalenesulfonic acid (NSA) as anions. These ILs were used as green corrosion inhibitors for brass specimens in a nitric acid solution. ...
A facile ionic liquid approach to prepare cellulose fiber with good mechanical properties directly from corn stalks
Jiming Yang, Xingmei Lu, Yanqiang Zhang, Junli Xu, Yongqing Yang, Qing Zhou
2020, 5(2): 223-231. doi: 10.1016/j.gee.2019.12.004
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It is very difficult to directly spin the lignocellulose without pretreatment. Ionic liquids (ILs) are promising solvent to dissolve lignocellulose to prepare cellulose fiber. However, the degree of cellulose polymerization（DP）is reduced when lignocellulose is dissolved in ILs, andthelignin removal ...
Dissolution of highly molecular weight cellulose isolated from wheat straw in deep eutectic solvent of Choline/l-Lysine hydrochloride
Jiake Wang, Yan Wang, Zhongzheng Ma, Lifeng Yan
2020, 5(2): 232-239. doi: 10.1016/j.gee.2020.03.010
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Green solvents for cellulose dissolution is a key topic for green chemistry, especially natural cellulose with high molecular weight, and there are scarce solvents reported. Deep eutectic solvent (DES) is a typical kind of green solvent that has been attracted much attention recently. Here, high mol...
Research article
Getting closer to the outstanding scientist in the field of ionic liquid—An interview with Prof. Robin D. Rogers
Jing Kong, Hongyan He
2020, 5(2): 240-242. doi: 10.1016/j.gee.2020.06.001
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Challenge and opportunity of ionic liquids—An interview with Prof. Douglas R. Macfarlane
Jing Kong, Hongyan He
2020, 5(2): 243-245. doi: 10.1016/j.gee.2020.06.002
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