Petroleum Science
·
2025
·
IF 6.1
Jia-Jun Dai,Kai-He Lv,Jin-Sheng Sun,Han Jia,Xian-Bin Huang,Jian Li
A B S T R A C T Ionic liquids (ILs), recognized for their negligible vapor pressure, thermal stability, and structural tailorability, offer targeted inhibition of clay expansion. Compared to ILs, polyionic liquids (PILs) possess stronger mechanical properties and adsorption capabilities, showing even greater potential in inhibiting clay swelling. In this work, we synthesized and characterized an imidazole-based ionic liquid (IL-NH 2 ), a polyionic liquid (PIL-ABHIm), and a PIL/IL combination. Their inhibitory performance was rigorously evaluated under simulated drilling conditions through immersion tests, linear swelling tests, among others. Additionally, the mechanisms underlying their interaction with clay minerals were elucidated through contact angle measurements, Fourier-transform infrared spectroscopy, X-ray diffraction (XRD), Zeta potential analysis, and molecular electrostatic potential (MEP) analysis. This work demonstrates that IL-NH 2 inhibits osmotic hydration by altering the interlayer structure of the clay, while PIL-ABHIm reduces surface hydration by forming a hydrophobic barrier on the clay surface. PIL/IL combines both mechanisms, significantly enhancing the stability of clay through the dual mechanisms of cation exchange and hydrophobic barriers. These findings reveal an innovative mechanism by which PIL/IL combination inhibits clay hydration and swelling, providing a scientific foundation for their application in drilling fluids.
研究领域:
石油工程
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材料科学
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表面化学
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产品关联
DOI
高影响因子
Science China-Chemistry
·
2013
·Vol. 57
·期 3
·397-401
·
IF 1.327
Zhang QiBo,Hua YiXin,Wang Rui
Direct electroreduction of solid cuprous chloride to prepare copper powder in a “neutral” ambient-temperature ionic liquid, 1-butyl-3-methylimidazolium tetrafluoroborate ionic liquid (BMIMBF 4 ) was investigated. Cyclic voltammetry of the CuCl powder in a Pt-powder cavity microelectrode exhibited that solid CuCl can be electrochemical reduced in the ionic liquid. Chronoamperometry of the salt powder filled Mo-cavity electrode (current collector) in the ionic liquid further demonstrated the conversion of chloride-to metal inside the cavity, as confirmed by scanning electron microscopy, energy-dispersive X-ray, and X-ray diffraction spectra.
研究领域:
电化学
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材料科学
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无机化学
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绿色化学
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冶金工程
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Shaojuan Zeng,Junli Wang,Pengfei Li,Haifeng Dong,Hui Wang,Xiaochun Zhang,Xiangping Zhang
The emerging of ionic liquids (ILs) provides a promising way to efficiently separate ammonia (NH 3 ) and simultaneously recover NH 3 due to their negligible volatility, good affinity with NH 3 and designable structures. However, the relatively high viscosities of ILs and the limited gas-liquid interface severely affect gas diffusion in ILs, which hinders their practical use in industries. In this work, in order to overcome the mass-transfer limitations of ILs in gas separation, three metal ILs (MILs), [Bmim] 2 [CuCl 4 ], [Bmim] 2 [NiCl 4 ] and [Bmim] 2 [Co(NCS) 4 ], with good affinity toward NH 3 were incorporated into porous silica gels with large surface area and abundant hydroxyl groups, by an impregnation-vaporization method to form novel MIL@silica gel composites for rapid, efficient and reversible adsorption of NH 3 . The FT-IR and BET results indicated that the prepared adsorbents with different loadings of MILs are mesoporous composites. The [Bmim] 2 [Co(NCS) 4 ]@silica gel composites not only show much higher NH 3 capacity and NH 3 selectivity than pristine silica gel and faster adsorption rate than the corresponding pure MILs, but also exhibit excellent reversibility. The highest capacity of NH 3 adsorption up to 99.808 mg NH 3 ·(g adsorbent) −1 in 15 min was obtained when the loading of [Bmim] 2 [Co(NCS) 4 ] in the MIL@silica gel composite was 48.89 wt%, which could be attributed to the synergistic interaction of the complexation and hydrogen bonding between cobalt coordinated anion and NH 3 as well as mesoporous structures. Moreover, the NH 3 absorbed by the [Bmim] 2 [Co(SCN) 4 ]@silica gel can be completely released in 15 min, and no obvious losses in NH 3 capacity were detected during five adsorption and regeneration cycles, indicating great potentials as adsorbents for NH 3 separation applications.
研究领域:
化学工程
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材料科学
✓ 已验证
DOI
高影响因子
RSC Advances
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2016
·Vol. 6
·期 43
·37110-37117
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IF 3.289
Mingjuan Han,Zheng Gu,Chong Chen,Zuowang Wu,Yigen Que,Qiang Wang,Hui Wan,Guofeng Guan
A new, simple and effective strategy to confine dicationic acid ionic liquids (DAILs, 1,4-bis[3-(propyl-3-sulfonate) imidazolium] butane hydrogen sulfate) in the cages of MIL-100(Fe) frameworks was constructed. The target catalyst, defined as MIL-100(Fe)@DAILs, was characterized by XRD, FTIR, SEM, TEM, EA, TGA and N2 adsorption–desorption. Meanwhile, the catalytic activity of the MIL-100(Fe)@DAILs catalyst was evaluated by the esterification reaction with oleic acid and methanol. The results indicated that the DAILs had been effectively encapsulated within the cages of the MIL-100(Fe) frameworks. Moreover, the influence of reaction time, reaction temperature, molar ratio of methanol to oleic acid and catalyst dosage on the conversion of oleic acid was studied by univariate analysis. The conversion of oleic acid decreased from 93.5% to 86.0% when the catalyst was reused five times, which indicated that the target catalyst possessed higher catalytic activity and superior catalytic activity. Finally, an esterification mechanism catalyzed by this novel catalyst was illustrated.
研究领域:
化学工程
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催化材料
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可再生能源
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产品关联
DOI
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2013
·
IF 2.004
Duan-Jian Tao,Zheng Cheng,Feng-Feng Chen,Zhang-Min Li,Na Hu,Xiang-Shu Chen
Nowadays the knowledge of thermodynamic properties for amino acid ionic liquids (AAILs) has been paramount for the design of many chemical processes. In this present work, a series of cholinium-based AAILs ([Ch][AA]) were synthesized by neutralization of choline hydroxide solution with five amino acids and then were characterized by 1H NMR, Fourier transform infrared (FT-IR), elemental analysis, thermogravimetry, and differential scanning calorimetry (DSC) analysis. Physico-chemical properties such as density, viscosity, refractive index, and conductivity were measured and correlated with the empirical equations in a wide temperature range. The thermal expansion coefficient values were also calculated from the acquired experimental density values. From the experimental data, it was found that the density, viscosity, and refractive index decreased while conductivity increased with the increase of temperature. The correlation results were proposed to be in good agreement with the experimental data, and optimal fitting parameters were presented. In addition, the coefficient of thermal expansion was considered to be independent of temperature in the range of (298.15 to 353.15) K.
研究领域:
化学工程
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
IONICS
·
2015
·Vol. 21
·期 9
·2567-2574
·
IF 1.754
Liu Guishen,Ma Yanhui,Hou Xiaodong,huang Yina,Chen Jianpeng,Zhan Guoqing,Li Chunya
1-[3-(N-Pyrrole)propyl]-3-[1-tert-butoxy-carbonylamino-propyl]imidazolium tetrafluoroborate ionic liquid was successfully synthesized and characterized. The ionic liquid was electrochemically polymerized onto a glassy carbon electrode surface using a multi-potential step technique. Morphology and electrochemical properties of the polymerized ionic liquid film electrode were studied with scanning electronic microscopy and electrochemical impedance spectroscopy. Using the polymerized ionic liquid film as a sensing platform, electrochemical behaviors of magnolol were investigated by voltammetry. Under optimal experimental conditions, the oxidation peak currents were linearly related to magnolol concentrations in the range from 5.0 × 10 −8 to 1.0 × 10 −5 mol L −1 . The detection limit calculated from the standard deviation of the intercept was 2.3 × 10 −7 mol L −1 . Practical application of the polymerized ionic liquid film electrode was demonstrated by determining magnolol in the traditional Chinese medicine. The result is consistent with that obtained using high performance liquid chromatography.
Polymerized ionic liquid film electrode fabricated with potential step technique and application in voltammetric sensing of magnolol
研究领域:
分析化学
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电化学
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产品关联
DOI
高影响因子
AICHE JOURNAL
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2019
·Vol. 66
·期 1
·e16779
·
IF 3.463
Guiling Shi,Hongqin Zhao,Kaihong Chen,Wenjun Lin,Haoran Li,Congmin Wang
For an ideal absorbent for CO 2 capture from flue gas, there are some key features including easy preparation, high stability, low absorption enthalpy, high capacity at high temperature and excellent reversibility. Herein, several polyamine-functionalized ionic liquids (ILs) were easily prepared from cheap polyamines and lithium salts, which exhibited significantly improved stability due to the presence of multisite coordinating interactions. The viscosity was reduced by introducing polyalcohol-based ILs, leading to polyamine-based hybrid ILs. Interestingly, these polyamine-based hybrid ILs exhibited high CO 2 capacity (4.09 mmol/g, 0.1 bar) at high temperature (80°C) and excellent reversibility in the presence of H 2 O and O 2 , which is superior to many other good absorbents. Moreover, these ILs also showed good performance for CO 2 capture from stimulated air (2.10 mmol/g, 380 ppm). We believe that this method with easy preparation, low cost, high efficiency and excellent reversibility has a great potential in the industrial capture of CO 2 from flue gas.
研究领域:
化学工程
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
Petroleum Science
·
2024
·
IF 6
Ran Liu,Chang Wang,Qiang Yang,Jing-Ran Yang,Chen Liu,Liberty Mguni,Xin-Ying Liu,Ya-Li Yao,Fa-Tang Li
The development of highly active functionalized ionic liquids (ILs) as both extractants and catalysts for use in achieving deep desulfurization continues to pose challenges. In this study, a highly efficient oxidative desulfurization system was constructed, composed of dual-acidic ionic liquids (DILs) and H 2 O 2 -AcOH. The investigation results of four DILs prepared from different metal chlorides ([HSO 3 C 3 NEt 3 ]Cl-MnCl n , MnCl n = AlCl 3 , ZnCl 2 , CuCl 2 , FeCl 3 ) in oxidative desulfurization showed that [HSO 3 C 3 NEt 3 ]Cl-AlCl 3 had an outstanding catalytic effect and significantly promoted the oxidation of sulfides. With a 0.2 g [HSO 3 C 3 NEt 3 ]Cl-AlCl 3 , the removal rate of dibenzothiophene (DBT) reached 100% in 10 mL model oil under mild conditions at 55 °C for 20 min. The key is its ability to induce the dismutation of superoxide anions (•O 2 − ), which facilitates the generation of singlet oxygen ( 1 O 2 ). The efficient oxidation of DBT is accomplished through a predominantly 1 O 2 -mediated non-radical mechanism. [HSO 3 C 3 NEt 3 ]Cl-AlCl 3 serves as a favorable medium for contact to be made between 1 O 2 and sulfides, which indicates an efficient catalytic-adsorption synergy.
研究领域:
化学工程
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催化材料科学
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产品关联
DOI
高影响因子
ENVIRONMENTAL RESEARCH
·
2024
·
IF 7.7
Congfei Yao,Haisong Wu,Xiaoyu Li,Qiuyu Chen,Wanxiang Zhang,Gangqiang Yu,Hongqi Liu,Yuqing Miao,Weize Wu
The hydrophobic nature of an extractant is particularly critical in the treatment of wastewater. Considering that dicationic ionic liquids (DILs) are likely to be more hydrophobic, a comparative study of the separation of phenol from waters using [NTf 2 ] – based monocationic ionic liquids (MILs) and DILs is carried out both from experimental and theoretical analysis perspectives. Experimental results revealed that DILs exhibited superior extraction ability compared to MILs, with extraction efficiencies of 93.7% and 97.4% using [BMIM][NTf 2 ] and [C 6 (MIM) 2 ][NTf 2 ] 2 as extractants, respectively. The microscopic examination through theoretical calculations elucidated the higher hydrophobicity and extraction efficiency of DILs over MILs. The results indicated that the DIL showed stronger hydrophobicity than the MIL because the hydrogen bond strength between the DIL and water was lower than that of the MIL. Although the hydrogen bond strength between the DIL and phenol was lower than that of the MIL, the stronger van der Waals forces existed between DIL and phenol, so DIL was more efficient in extracting phenol. In addition, the experimental parameters were optimized to provide basic data for application, such as mass ratio of ILs to water, extraction time and temperature, pH, and initial phenol content. Finally, the DILs were recovered using rotary evaporation apparatus, and the results demonstrated that DILs had good recovery and reuse performance. In brief, this work could provide an effective method for the treatment of phenol-containing wastewater. And the revelation of molecular mechanism is expected to positively impact the design of high-performance task-specific ILs.
研究领域:
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FUEL
·
2024
·
IF 6.7
Jiaxi Yang,Dan Gao,Heng Zhang,Qun Yi
The efficient capture of carbon dioxide (CO 2 ) by porous ionic liquids (PILs) has become one of the important ways to deal with the greenhouse effect and enhance environmental protection. In order to enhance the CO 2 capture efficiency of PILs, 2 amino-functional ionic liquids (ILs) were synthesized in deionized water: tetraethylenepentamine-2-methylimidazole ([TEPA][MIm]) and diethylenetriamine-2-methylimidazole ([DETA][MIm]). 2 zeolite imidazolidin-8 frames (ZIF-8-W and ZIF-8-M) were prepared in methanol and deionized water. The performance of the material was verified through FT-IR infrared spectroscopy, TGA-DTG curves, XRD spectra, adsorption desorption curves, and corrosive changes. Based on this, the porous ionic liquid ZIF-8-W/[TEPA][MIm] with the best performance and ZIF-8-W with the best environmental friendliness were successfully constructed. The chemical reaction mechanism of CO 2 in PILs were explored. The results showed that the thermogravimetric temperature of all materials was greater than 370 K, and the difference in adsorption capacity between ZIF-8-W and ZIF-8-M was only about 36.3 ml/g, the maximum mass change rates of the two ILs after immersion in ceramic and stainless steel tubes for 7 days were only 0.78 % and 0.29 %, respectively. On the premise of ensuring fluidity, the maximum capture capacity of ZIF-8-W/[TEPA][MIm] for pure CO 2 reached 2.22 mol/mol PILs, and the maximum capture capacity for CO 2 in artificial flue gas reached 2.03 mol/mol PILs, which was 21.9 % and 31.6 % higher than the maximum capture capacity of pure ionic liquids, respectively. When [TEPA][MIm] in PILs reacts with CO 2 , it conforms to the characteristics of “zwitterions”.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2018
·
IF 4.513
Xuezhi Dai,Jinhang Li,Yuzhi Ma,Xianqiu Lan,Hang Song
The application of guanidinium-based ionic liquids (ILs) is a newly emerging area in the fields of extraction desulfurization. Herein, four novel pentaalkylguanidinium-based magnetic room temperature ionic liquids (MRTILs) [C n TMG][FeCl 3 Br] (n = 2, 4, 6, 8) were synthesized and characterized by FT-IR, Raman and HRMS (ESI) spectra. The physical properties including thermal stability, density, viscosity, conductivity and magnetic properties were determined and revealed that the MRTILs were liquids at room temperature and have good thermal stability ( T d > 250 °C), high magnetic susceptibility (>3.8 × 10 5 emu·g −1 ) and low viscosities (<160 mPa·s, 25 °C). Moreover, the mutual solubility behaviors for binary systems of MRTILs with representative non-polar organic solvents (cyclohexane, n -octane) were measured at temperatures from 5 to 65 °C, showed a low miscibility between MRTILs and organic solvents and a typical lower critical solution temperature (LCST) phenomenon. The results are supposed to provide useful information for further application as “green” liquid desulfurization extractants or others potential dispersive liquid-liquid microextraction applications.
研究领域:
化学工程
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
GREEN CHEMISTRY
·
2023
·Vol. 25
·期 14
·5679-5691
·
IF 9.8
Weiming Liu,Liwei Zhang,Miao Li,Qian Wang,Jinyun Gu,Xiaoyi Chen,Xiaoyu Guo,Zhimin Yu,Xianzhen Li,Shang Wang,Fan Yang
Pure or highly concentrated ionic liquids (ILs, CIL > 40% v/v) have been widely applied for the preparation of value-added products from polysaccharides by breaking their hydrogen bonds. Reducing the dosage of ILs would benefit the establishment of a greener process. However, the effect of low-concentration ILs on the pretreatment of polysaccharides, especially water-soluble recalcitrant polysaccharides, has not been fully investigated. In this study, aqueous [Bmim]Cl (1-butyl-3-methylimidazolium chloride) with different dilution ratios was applied to treat xanthan gum (XG) and assist XG hydrolysis. Structural characterization and hydrolysate analyses showed that 1% (v/v) [Bmim]Cl could effectively break intramolecular hydrogen bonds of XG through the binding of [Bmim]+ to XG side chains, disrupting the XG conformation. Such changes increased the accessibility of XG for chemical reagents. Moreover, [Bmim]Cl could significantly increase the content of hydroxyl and superoxide radicals (from H2O2) in the reaction system. These interactions strengthened the acidic oxidative hydrolysis of XG. Notably, a low concentration of [Bmim]Cl was proved to inhibit the Maillard browning of the acidic oxidative hydrolysis system, which also contributed to XG degradation. Under hydrolysis conditions of 0.4 M HCl, 0.75% (w/v) H2O2 and 1% (v/v) [Bmim]Cl for 4 days at 80 °C, XG could be hydrolyzed into a mixture with a high dextrose equivalent value of 29.16% containing 25 types of oligosaccharides. Meanwhile, the XG hydrolysates showed good antioxidant ability and elicitor activity against soybean cotyledon. Our work should be valuable for establishing a green and economic platform for valorizing water-soluble recalcitrant polysaccharides.
研究领域:
化学工程
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生物技术
·
绿色化学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）