AICHE JOURNAL
·
2012
·Vol. 59
·期 3
·948-958
·
IF 2.261
Jiajun Gao,Hong Meng,Yingzhou Lu,Hongxing Zhang,Chunxi Li
Lewis hard acid AlCl 3 was softened by some butyl halides forming highly polarized liquids. These liquids are similar to the ionic liquids (ILs) with metallic complex anion and varying composition, and thus termed here as carbonium pseudo ILs (CPILs). The CPILs, that is, t -C 4 H 9 Cl-AlCl 3 , n -C 4 H 9 Cl-AlCl 3 , and t -C 4 H 9 Br-AlCl 3 , show very strong desulfurization activity for various thiophenic compounds like 3-methylthiophene, benzothiophene, and dibenzothiophene. The above thiophenic compounds can be removed completely from model oils within 20 min by a very small amount of CPILs reactive extractant. The extractive mechanism is deemed as an acid–base complexation along with alkylation of the thiophenic compounds, and the Lewis acidity comes from both carbonium ion (borderline acid) and the dissolved AlCl 3 (hard acid). The t -C 4 H 9 Cl-AlCl 3 shows good selectivity for three thiophenic compounds even in toluene-containing system. Further, some CPILs show satisfactory desulfurization performance for the model gasoline that mimics the composition of real one. © 2012 American Institute of Chemical Engineers AIChE J, 59: 948–958, 2013
研究领域:
化学工程
·
环境科学
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DOI
高影响因子
Polymers
·
2025
·Vol. 17
·期 14
·1963
·
IF 4.9
Gaoshen Su,Jingyi Cui,Chaoyang Li,Ping Chen,Yong Li,Wenxue Jiang,Huan Yang,Xiaorong Yu,Liangliang Wang
To examine how reaction media influence the copolymerization processes of acrylamide-based copolymers, [BMIM]Oac and water were utilized as the reaction media. Four copolymers P(AM-SSS) (H2O), P(AM-UA) (H2O), P(AM-SSS) (ILs), and P(AM-UA) (ILs) were synthesized using the soluble monomer sodium p-styrene sulfonate (SSS), the insoluble monomer 10-undecylenoic acid (UA), and acrylamide (AM). The properties of the copolymers were characterized using infrared spectroscopy and1H NMR, and the copolymerization rates of the monomers and the segment sequences of the copolymers were calculated. The results indicated that copolymerization of SSS in ionic liquids could reduce the length of the continuous units of AM in the copolymer’s molecular chain from 231.2866 to 91.1179, with a more uniform distribution within the molecular chain. The thermal stability and micro-morphology of the copolymers were tested using a synchronous thermal analyzer and scanning electron microscopy, and the resistance of the copolymer solutions to temperature, salt, and shear were evaluated. Comparisons revealed that the three-dimensional spatial structure formed by the copolymers in ionic liquids is robust and loose. When AM and SSS polymerize in [BMIM]Oac, the resulting copolymer exhibits a higher viscosity retention rate in temperature and shear resistance tests, with a thermal decomposition temperature reaching 260 °C. Conversely, when AM and UA polymerize in [BMIM]Oac, the copolymer demonstrates good salt resistance, maintaining a viscosity retention rate of 259.04% at a Na+concentration of 200,000 mg/L. Therefore, the ionic liquid [BMIM]Oac can enhance the various application performances of copolymers formed by monomers with different solubilities and AM.
研究领域:
高分子化学
·
材料科学
·
化学工程
·
物理化学
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PubMed
高影响因子
ADVANCED MATERIALS
·
2025
·
IF 26.8
Xianglin Guo,Lu Chen,Rurong Liu,Bowen Fan,Shan Cong,Zhen Wang,Zhigang Zhao
Electrochromic batteries are multifunctional devices that integrate optical modulation with energy storage capabilities through electrochemical reactions. Traditional electrochromic batteries rely on solid-state thin films, but their limited material loading constrains capacity to ≈100–300 mAh m −2 , failing to meet practical demands. Herein, an electrochromic battery based on ionic liquid 1-methyl-3-propylimidazolium triiodide (MPII 3 ) is proposed, where the color-changing mechanism is based on the reversible redox reaction of I − /I 3 − in solution, with 1-methyl-3-propylimidazolium cation (MPI + ) forming a complex with I 3 − to suppress its shuttle effect. More importantly, the resulting ionic liquid MPII 3 demonstrates exceptional reaction kinetics, enabling rapid and extensive charge transfer, thereby significantly enhancing the energy storage potential of electrochromic batteries. The fabricated devices achieve a high capacity of 56396 mAh m −2 at a current density of 0.5 mA cm −2 . Additionally, these MPII 3 electrochromic batteries exhibit an optical modulation as high as 68.1% and excellent cycling stability, with 92.3% capacity retention after 20 000 cycles. These findings represent a significant advancement and are expected to promote the practical application of electrochromic batteries in smart windows, energy-efficient buildings, and other fields.
研究领域:
材料科学
·
电化学
·
能源存储
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DOI
PubMed
高影响因子
BIORESOURCE TECHNOLOGY
·
2014
·
IF 5.039
Xin Zhang,Suojiang Zhang,Di Bao,Ying Huang,Xiangping Zhang
For biogas upgrading, present work mainly focuses on either thermodynamics or mass transfer properties. A systematical study on these two aspects is important for developing a new biogas separation process. In this work, a new criterion “absorption degree”, which combines both thermodynamics and mass transfer properties, was proposed for the first time to comprehensively evaluate the absorption performance. Henry’s law constants of CO 2 and CH 4 in ionic liquids–polyethylene glycol dimethyl ethers mixtures were investigated. The liquid-side mass transfer coefficients ( k L ) were determined. The results indicate that IL–NHD mixtures exhibit not only a high CO 2 /CH 4 selectivity, but also a fast k L for CO 2 absorption. The [bmim][NO 3 ] + NHD mixtures present a high absorption degree value for CO 2 but a low value for CH 4 . For presenting a highest relative absorption degree value, the 50 wt% [bmim][NO 3 ] + 50 wt% NHD mixture is recommended for biogas upgrading.
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高影响因子
Magnetic Resonance Letters
·
2026
·
IF 1.7
Ying Yang,Biling Huang,Qiong Wang,Guangjin Hou,Shaohua Huang
NMR spectral simplification is a powerful strategy for facilitating the analysis and structural characterization of complex mixtures. In this work, we present a nanoparticle-assisted protocol that employs positively charged imidazolium ionic liquid-coated silica nanoparticles ( 1 ) to selectively interact with analytes. π-π interactions, electrostatic attractions, and hydrogen-bonding between the nanoparticles and target molecules extend the rotational correlation time, thereby accelerating relaxation processes. As a result, NMR signals from aromatic and negatively charged species undergo pronounced attenuation or even complete disappearance. In contrast, signals from positively charged analytes or compounds lacking π-bond systems remain largely unaffected. This selective suppression of resonances enables effective spectral simplification and highlights the potential of nanoparticle-based editing approaches for practical applications in the analysis and structural determination of complex mixtures.
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高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2026
·Vol. 61
·期 15
·10341-10351
·
IF 4.4
Cao Haoran,Lv Hongming,Liu Haoqi,Hu Xiaosai
Ionic liquid-based flexible temperature sensors have recently garnered significant research interest. Nevertheless, a major obstacle to their practical application lies in the propensity of ionic liquids (ILs) to leak from flexible substrates, such as thermoplastic polyurethane (TPU), which significantly compromises their operational stability. To address this challenge, this work leverages the bridging effect of superabsorbent polymers (SAPs) to improve the binding capability of TPU flexible substrate toward ILs. SAPs, characterized by their inherent hydrophilic functional groups, are capable of establishing hydrogen bonds with both ILs and TPU substrate. This dual-hydrogen-bonding capability enables SAPs to act as an effective molecular bridge, modifying the intermolecular interactions between ILs and TPU. Consequently, the fabricated flexible TPU/IL/SAP temperature sensor exhibits a wide temperature-sensing range (− 20 to 80 °C), coupled with high detection resolution (0.1 °C), excellent linearity ( R 2 = 0.995), remarkable sensitivity (TCR = − 0.043/°C) within the critical 35–45 °C range, and a long-term durability (60 days). In addition, this work also designs a temperature readout circuit. The body temperature data are wirelessly transmitted via Bluetooth, which can realize real-time body temperature monitoring and display it on the mobile phone for users and medical staff. These properties render the sensor highly suitable for human breathing detection and real-time body temperature monitoring. These features will significantly enhance the practical application of wearable temperature sensors in smart healthcare.
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Biotechnology Journal
·
2025
·Vol. 20
·期 10
·e70136
·
IF 3.1
Chunshu Chen,Fan Yang,Le Zhong,Jinyun Gu,Weiming Liu,Wenbo Li,Ruiyu Shen,Zhimin Yu
One of the main obstacles to preparing oligoxanthan through the enzymatic degradation of xanthan gum (XG) is its dense structure. To achieve the large-scale production of oligoxanthan, it is necessary to perturbate the conformation of XG and increase enzyme accessibility. This research developed an efficient system for the enzymatic degradation of XG assisted by low concentrations of ionic liquids (ILs). Structural characterization results indicated that a low concentration of [EMIM]DEP (1%, v/v) not only loosens the structure of XG but also alters the secondary structure of enzyme, thereby dramatically increasing its hydrolytic activity and eventually enhancing the production of oligoxanthan. The results were further elucidated by molecular dynamics (MD) simulation. Under the hydrolysis conditions of 1.5 mg/mL Aspergillus niger cellulase ( An Cel), 0.2 mg/mL XG, and 1% (v/v) [EMIM]DEP at 40°C and pH 5.0 for 20 min, XG can be hydrolyzed into a mixture with a glucose equivalent of 32.25%. The degree of polymerization (DP) of XG hydrolysates was 3–10. Moreover, the xanthan hydrolysates obtained using this system exhibit excellent antioxidant activity. This study proposed an effective method for the preparation of functional oligosaccharides, which is of significant importance for the valorization of XG.
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PubMed
高影响因子
RUSSIAN JOURNAL OF APPLIED CHEMISTRY
·
2025
·Vol. 97
·期 8
·677-685
·
IF 0.6
Wang Haiyue,Ren Guanyu,Zhao Wenkai,Wang Jingwen,Guo Liying,Zhao Haichao,Chai Jingyu
Ionic liquids, as catalysts for carbonate derivatives, have high conversion rates and strong selectivity, and are environment-friendly. In this study, [HO–(CH 2 ) 2 –mim]5[Ti(H 2 O)FeMo 11 O 39 ] (IL-Fe) was prepared using sodium molybdate, TiCl 4 , and 1-hydroxypropyl-3-methylimidazolium bromide salt ([HO–(CH 2 ) 2 –mim]Br). The products were characterised by IR, XRD, TGA, and UV spectroscopy, which showed that the structures were correct and that the catalysts were thermally stable. The synthesis of BISBC by IL-Fe-catalysed ISB was carried out and the structural characterisation and synthetic conditions of BISBC were optimised by orthogonal tests. The experimental results showed that four factors, i.e. feeding ratio, catalyst dosage, reaction temperature, and reaction time, affected the yield of the BISBC prepolymer in descending order. The optimum process conditions for the BISBC yield were defined: feeding ratio n (DMC) : n (ISB) = 5; catalyst dosage = 1.0 wt %; reaction temperature = 80°C; reaction time = 5 h. Under these reaction conditions, one-way experiments were again carried out for validation, and the BISBC yield was as high as 75.32%.
研究领域:
化学合成
·
催化化学
·
绿色化学
·
材料科学
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DOI
高影响因子
Journal of the Taiwan Institute of Chemical Engineers
·
2015
·
IF 3
Yinghao Min,Yanmei Zhou,Min Zhang,Han Qiao,Qi Huang,Tongsen Ma
The removal of ionic liquid (1-butyl-3-methyl imidazolium chloride: BMImCl) was studied from aqueous solution by raw bentonite, acid-activated bentonite and organic-modified bentonite. These types of bentonite sample were characterized by FT-IR, TGA and XRD. The effects of contact time, BMImCl initial concentration, pH, ionic strength, and humic acid on the removal of BMImCl were investigated via batch adsorption experiments. The adsorption kinetics models were applied to predict the adsorption constants, and the kinetic data indicated that the pseudo-second-order model gave a better fit. Furthermore, the Langmuir, Freundlich and Temkin isotherms models were also introduced to describe adsorption process in order to obtain possible mechanism of the removal. The applied isotherms models demonstrated that the adsorption data of acid-activated bentonite samples were well described by Temkin adsorption isotherm, and the isotherm model of organic-modified bentonite was Langmuir adsorption isotherm. The adsorption experiments indicated that these bentonite samples might be applied in repair of soil and water contaminated by ionic liquids.
研究领域:
环境科学
·
土壤修复
·
水污染治理
·
吸附材料
·
环境功能材料
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DOI
高影响因子
JOURNAL OF APPLIED ELECTROCHEMISTRY
·
2012
·Vol. 42
·期 10
·851-856
·
IF 1.745
Li Mingtao,Dong Siming,Fang Shaohua,Yang Li,Hirano Shin-ichi,Hu Jiayang,Huang Xinming
A new kind of polymeric ionic liquid (PIL) membrane based on guanidinium ionic liquid (IL) with ester and alkyl groups was synthesized. On addition of guanidinium IL, lithium salt, and nano silica in the PIL, a gel PIL electrolyte was prepared. The chemical structure of the PIL and the properties of gel electrolytes were characterized. The ionic conductivity of the gel electrolyte was 5.07 × 10 −6 and 1.92 × 10 −4 S cm −1 at 30 and 80 °C, respectively. The gel electrolyte had a low glass transition temperature ( T
g
) under −60 °C and a high decomposition temperature of 310 °C. When the gel polymer electrolyte was used in the Li/LiFePO 4 cell, the cell delivered 142 mAh g −1 after 40 cycles at the current rates of 0.1 C and 80 °C.
研究领域:
材料科学
·
电化学
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高影响因子
LIQUID CRYSTALS
·
2019
·
IF 3.078
Xiaodong Wang,Lu Bai,Shengwen Kong,Ying Song,Fanbao Meng
Series of novel star-shaped liquid crystals containing [1,1ʹ-biphenyl]-4,4ʹ-diyl diisonicotinate mesogens with various counterions (Br−, B-SO3−,C-SO3−,H2PO4−, BF4−) have been synthesized and characterized, which display a nematic phase. The molecular structures of the liquid crystals, thereof consisting of rod-like mesogens linked together by different long alkyl spacers to a small disc-like core of central benzene-1,3,5-triyl triisonicotinate, have been fully characterized by 1H NMR. Their thermal and supramolecular organization behaviours have been studied by combining polarized optical microscopy, differential scanning calorimetry and small-angle X-ray scattering. These investigations showed that the mesophase temperature range increased with increasing alkyl chain length and the clearing point decreased with increase of anion size. These star-shaped liquid crystals have a long and ordered molecular structure, the electron delocalization of the π-π stacking conjugation effect and the electrostatic attraction of ionic make them have good ferroelectric properties and ionic conductivity properties. The interest in preparing ionic liquid crystal with a nematic phase lies in the technological applications as it is well known that the nematic phase has the highest fluidity of all liquid crystalline phases and hence the possibility to align it by applying an external electric/magnetic field, commonly used in electro-optical devices.
研究领域:
材料科学
·
化学
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高影响因子
SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2019
·
IF 6.019
Yunxiang Chen,Jingting Zhu,Haibin Ma,Longlong Chen,Rong Li,Ping Jin
Vanadium dioxide (VO 2 ) is an ideal thermochromic material for “smart window” which can reduce energy consumption of air conditioning in modern architectures. However, the application of VO 2 -based smart window is always limited by the poor luminous transmittance ( T lum ), low solar regulation efficiency (Δ T sol ) and unsightly brown color. According to previous researches, compositing has been approved to be an effective method to solve all of above issues for VO 2 -based smart window simultaneously. In this work, a new thermochromic ionic liquid (nickel-bromine-ionic liquid (or Ni-Br-IL, for short)) was synthesized and introduced to be composited with VO 2 nanoparticles for enhanced performance. The composite film demonstrates ultrahigh optical properties : Δ T sol = 27.0%, which is 1.91 times higher than that of pure VO 2 film (14.1%) at a rather high T lum ( T l, lum = 65.9% and T h, lum = 55.3%) with little loss of visible light at high temperature (Δ T lum = 10.6%). Meanwhile, it can be observed the color change from light yellow to green clearly as the temperature rises. Such enhanced performance will benefit the publicity and application for VO 2 -based smart window.
研究领域:
材料科学
·
能源工程
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高影响因子
危险品化学品经营许可证（带存储）