Journal of Ionic Liquids最新文献_第9页

Synergistic bactericidal activity of chlorhexidine loaded on positively charged ionic liquid-protected silver nanoparticles as a root canal disinfectant against Enterococcus faecalis: An ex vivo study 洗必泰负载在带正电荷的离子液体保护银纳米粒子上作为根管消毒剂对粪肠球菌的协同杀菌活性：体内外研究

Journal of Ionic Liquids

Pub Date : 2024-12-01 Epub Date: 2024-10-05 DOI: 10.1016/j.jil.2024.100117

Abbas Abbaszadegan , Elham Tayebikhorami , Ahmad Gholami , Nazanin Bonyanpour , Bahar Asheghi , Sara Nikmanesh

The advancement of nanotechnology and the development of nanocomplexes offer promising solutions to address the limitations in biofilm management within endodontics. Current cleaning and disinfection methods often fail to completely eliminate bacterial biofilms from the complex anatomical structures of root canals, making the invention of new disinfectants or disinfection methods highly relevant. Previously, chlorhexidine-loaded positively charged ionic liquid-protected silver nanoparticles (CHX@AgNPs⁺) were introduced as an innovative root canal irrigation solution, demonstrating significant antibacterial efficacy against Enterococcus faecalis in vitro. This study aimed to further evaluate the antibiofilm activity of CHX@AgNPs⁺ in the root canals of extracted human teeth contaminated with E. faecalis biofilm. Fifty single-rooted human teeth with mature apices were randomly assigned to five experimental groups based on the irrigants used: CHX@AgNPs⁺, AgNPs⁺, 2.5 % NaOCl, 2 % CHX, and normal saline (n = 10 per group). The root canals were contaminated with E. faecalis, and biofilm formation was confirmed. Initial sampling (S1) was performed, followed by mechanical preparation of the root canals using ProTaper F3 files and irrigation with the respective test solutions. Post-instrumentation sampling (S2) was then conducted. The results demonstrated that CHX@AgNPs⁺ exhibited antibiofilm properties comparable to 2.5 % NaOCl, with no significant difference between them. Additionally, CHX@AgNPs⁺ significantly enhanced antimicrobial efficacy compared to CHX alone (P < 0.05), highlighting its potential as an effective root canal disinfectant.

纳米技术的进步和纳米复合物的开发为解决根管治疗中生物膜管理的局限性提供了前景广阔的解决方案。目前的清洁和消毒方法往往无法彻底清除根管复杂解剖结构中的细菌生物膜，因此发明新的消毒剂或消毒方法非常重要。此前，一种创新的根管冲洗溶液--含氯己定的带正电离子液体保护银纳米粒子（CHX@AgNPs⁺）被引入，在体外对粪肠球菌有显著的抗菌效果。本研究旨在进一步评估 CHX@AgNPs⁺ 在被粪肠球菌生物膜污染的人类拔牙根管中的抗生物膜活性。根据所使用的冲洗剂，50 颗单根成熟根尖的人类牙齿被随机分配到五个实验组：CHX@AgNPs⁺、AgNPs⁺、2.5 % NaOCl、2 % CHX 和生理盐水（每组 10 人）。根管被粪大肠杆菌污染，并确认形成了生物膜。首先进行初始取样（S1），然后使用 ProTaper F3 锉对根管进行机械制备，并用相应的测试溶液进行灌洗。然后进行仪器后取样（S2）。结果表明，CHX@AgNPs⁺ 的抗生物膜特性与 2.5 % NaOCl 相当，两者之间没有显著差异。此外，与单独使用 CHX 相比，CHX@AgNPs⁺ 的抗菌效果显著提高（P <0.05），突出了其作为一种有效根管消毒剂的潜力。

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引用次数: 0

A review of CO2 capture for amine-based deep eutectic solvents 胺类深共晶溶剂的二氧化碳捕集综述

Journal of Ionic Liquids

Pub Date : 2024-12-01 Epub Date: 2024-10-01 DOI: 10.1016/j.jil.2024.100114

Muhammad Fizri Hazeem Ismail , Asiah Nusaibah Masri , Norhana Mohd Rashid , Izni Mariah Ibrahim , Sulafa Abdalmageed Saadaldeen Mohammed , Wan Zaireen Nisa Yahya

Carbon Dioxide can be naturally produced and make up of 0.04 percent in the earth's atmosphere. However, centuries by centuries follows by the modernization of humans, it has escalated to the state of causing inimical impacts towards the human and environment. Additionally, one of the most important fuel sources in the world, natural gas, in its raw state contains high levels of CO₂ that must be removed to avoid issue such heating value reduction and pipeline corrosion concurrently reduces the effect towards environment. To tackle this issue, the development of CO₂ absorbent capable of absorbing large amount of CO₂ hence reducing the effects it has towards the environment has become a topic among researchers this past decades. Conventionally, the use of amine such as alkanolamine have been implemented to capture CO₂, yet it flaws outclass its uses such as limited ability to take up CO₂ and high corrosivity. Following this, ionic liquids (ILs), a new species of solvent, came to be in the limelight since they are tunable according to their function, including carbon capture. Nonetheless, in recent years, a newly discovered green solvent, deep eutectic solvent (DES) stole the limelight. This absorbent was claimed to retain all the advantages and desirable properties of ionic liquids while eliminating some of their greatest limitations. In this review, we examined the potential for carbon capture using multiple amine-based deep eutectic solvents and explored the role of including a third compartment as a performance enhancement mechanism. Last but not least, we are anticipating the publication of future species of amine-based deep eutectic solvents, which will include more information that had previously been considered scarce, such as its level of toxicity, its economic validation, and the evidence of melting point reduction.

二氧化碳是自然产生的，在地球大气中占 0.04%。然而，几个世纪以来，随着人类的现代化进程，二氧化碳已经升级到对人类和环境造成有害影响的程度。此外，作为世界上最重要的燃料来源之一，天然气在其原始状态下含有大量二氧化碳，必须将其去除，以避免热值降低和管道腐蚀等问题，同时减少对环境的影响。为解决这一问题，过去几十年来，开发能够吸收大量二氧化碳从而减少其对环境影响的二氧化碳吸收剂已成为研究人员的一个课题。传统上，人们使用胺类物质（如烷醇胺）来捕捉二氧化碳，但其缺点是吸收二氧化碳的能力有限且腐蚀性强。随后，离子液体（ILs）这一新型溶剂因其可根据功能（包括碳捕获）进行调整而备受关注。然而，近年来，一种新发现的绿色溶剂--深共晶溶剂（DES）抢尽了风头。据称这种吸收剂保留了离子液体的所有优点和理想特性，同时消除了离子液体的一些最大局限性。在本综述中，我们研究了使用多种胺类深共晶溶剂进行碳捕集的潜力，并探讨了将第三个隔室作为性能增强机制的作用。最后但并非最不重要的一点是，我们期待着未来胺类深共晶溶剂品种的出版，其中将包括更多以前被认为是稀缺的信息，例如其毒性水平、经济性验证以及熔点降低的证据。

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引用次数: 0

Effect of modifiers on the stability of 1‑butyl‑3-methylimidazolium-based ionic liquids 改性剂对 1-丁基-3-甲基咪唑鎓离子液体稳定性的影响

Journal of Ionic Liquids

Pub Date : 2024-12-01 Epub Date: 2024-11-06 DOI: 10.1016/j.jil.2024.100124

Artyom V. Belesov, Daria A. Lvova, Ilya I. Pikovskoi, Mark S. Popov, Nikolay V. Ul'yanovskii, Dmitry S. Kosyakov

The distinctive capabilities of 1‑butyl‑3-methylimidazolium (bmim) cation-based ionic liquids (ILs) to dissolve lignocellulosic biomass offer the potential for the development of novel green bioprocessing technologies based on their utilization as green solvents. The limited range of thermal stability of ILs necessitates the use of various co-solvents to maintain solubility. In the present study, an original approach to determine the degree of degradation of alkylimidazolium ILs was proposed, based on the application of gravimetric analysis method to determine the content of volatile degradation products and high-performance liquid chromatography-high-resolution mass spectrometry (HPLCHRMS) to determine the total degree of degradation. The proposed approach, as well as the combination of HPLCHRMS with gas chromatography-mass spectrometry (GC–MS), was employed to comprehensively characterize the impact of additives and impurities (water, dimethyl sulfoxide, hydrochloric and acetic acids, diethylamine) on the degradation of bmim acetate, chloride, and methyl sulfate during thermal treatment under typical biomass dissolution conditions (150 °C, 24 h). The presence of additives or impurities in the composition of ILs has been found to predominantly contribute to a decrease in the number of volatile compounds formed, while increasing the variety and relative content of non-volatile degradation products. The use of protic solvents and acids results in a decrease in the overall degree of degradation of ionic liquids and in the fraction of volatile compounds formed. This allows for the classification of binary mixtures based on these additives as "green" solvents at temperatures below 150 °C.

以 1-丁基-3-甲基咪唑（bmim）阳离子为基础的离子液体（ILs）具有溶解木质纤维素生物质的独特能力，这为开发基于其作为绿色溶剂的新型绿色生物加工技术提供了潜力。由于溶胶的热稳定性范围有限，因此必须使用各种助溶剂来保持溶解性。本研究提出了一种测定烷基咪唑鎓惰性离子降解度的新方法，即采用重量分析法测定挥发性降解产物的含量，并采用高效液相色谱-高分辨质谱法（HPLCHRMS）测定总降解度。在典型的生物质溶解条件（150 °C，24 小时）下，采用所提出的方法以及 HPLCHRMS 与气相色谱-质谱法（GC-MS）的结合，全面表征了添加剂和杂质（水、二甲亚砜、盐酸和乙酸、二乙胺）在热处理过程中对乙酸溴米姆、氯化物和硫酸甲酯降解的影响。研究发现，IL 成分中添加剂或杂质主要会减少形成的挥发性化合物的数量，同时增加非挥发性降解产物的种类和相对含量。使用质子溶剂和酸会降低离子液体的总体降解程度和形成的挥发性化合物的比例。因此，基于这些添加剂的二元混合物在温度低于 150 °C 时可归类为 "绿色 "溶剂。

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引用次数: 0

Surface-induced nano-generator utilizing a thermo-responsive smart window based on ionic liquid aqueous solution that exhibits lower critical solution temperature type phase separation 利用基于离子液体水溶液的热响应智能窗口的表面诱导纳米发电机，可实现较低临界溶液温度型相分离

Journal of Ionic Liquids

Pub Date : 2024-12-01 Epub Date: 2024-11-06 DOI: 10.1016/j.jil.2024.100123

Kazuya Goda, Wataru Kataoka, Rina Araki

We demonstrate a surface-induced nano-generator utilizing a thermo-responsive smart window based on ionic liquid aqueous solution that exhibits lower critical solution temperature (LCST) type phase separation. This smart window was fabricated by filling an aqueous solution of [

^{n}

Bu

_{4}

P][CF

_{3}

COO] between the glass substrates coated with two different polymers: a polyimide with an alkyl side chain and an amorphous fluoropolymer. Below the LCST, the transmittance of the smart window was 87 %, nearly identical to that of a glass substrate. In contrast, when heated above the LCST, the [

^{n}

Bu

_{4}

P][CF

_{3}

COO] aqueous solution undergoes phase separation, causing the [

^{n}

Bu

_{4}

P] cations and [CF

_{3}

COO] anions to adsorb onto the polyimide with the alkyl side chain and the amorphous fluoropolymer facilitated by the surface pinning effect. This adsorption process results in the smart window generating electricity while transitioning to an opaque state. Therefore, the proposed smart window functions as an electricity-generating thermo-responsive device that can switch between transparent and opaque states in response to temperature changes.

我们展示了一种表面诱导型纳米发电机，它利用了一种基于离子液体水溶液的热响应智能窗口，该窗口表现出较低临界溶液温度（LCST）型相分离。这种智能窗口是通过在涂有两种不同聚合物（带烷基侧链的聚酰亚胺和无定形含氟聚合物）的玻璃基板之间填充[nBu4P][CF3COO]水溶液而制成的。在 LCST 以下，智能窗口的透射率为 87%，几乎与玻璃基板的透射率相同。相反，当加热温度高于 LCST 时，[nBu4P][CF3COO] 水溶液会发生相分离，导致[nBu4P]阳离子和[CF3COO]阴离子在表面针刺效应的作用下吸附到带有烷基侧链的聚酰亚胺和无定形含氟聚合物上。这一吸附过程使智能窗在发电的同时过渡到不透明状态。因此，所提出的智能窗可作为一种发电热响应器件，能根据温度变化在透明和不透明状态之间切换。

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引用次数: 0

Enhancing water circularity: Lactic acid-menthol deep eutectic solvent for efficient fats, oils and grease (FOG) removal and recovery from contaminated waters 提高水循环能力：乳酸-薄荷醇深度共晶溶剂，用于从受污染水体中高效去除和回收油脂（FOG）

Journal of Ionic Liquids

Pub Date : 2024-12-01 Epub Date: 2024-11-10 DOI: 10.1016/j.jil.2024.100126

Andrés S. Lagos , Andrea C. Landázuri

Water pollution, particularly the contamination of water sources by fats, oils, and grease (FOG), presents a significant environmental challenge exacerbated by climate change. While conventional water resource recovery facilities (WRRFs) address various contaminants, FOG treatment often remains indirect and suboptimal. This study introduces an innovative, environmentally benign approach utilizing deep eutectic solvents (DESs) for the targeted removal and recovery of FOG from contaminated waters via liquid-liquid extraction. A binary DES comprising menthol and lactic acid was synthesized and evaluated for its efficacy in extracting oleic acid, selected as a model fatty acid contaminant. The investigation employed a comprehensive factorial design to optimize key operational parameters, including the molar ratio of DES components, solvent-to-water ratio, contact time, initial contaminant concentration, stirring speed, and phase separation time. Results demonstrated exceptional removal efficiencies exceeding 95 % under optimized conditions, with peak performance approaching 99.5 %. Optimal parameters were identified as a 1:1 molar ratio of menthol to lactic acid, 1:10 DES-to-water ratio, 15-minute contact time, 300 mg L⁻¹ initial contaminant concentration, 500 RPM stirring speed, and 8-hour phase separation. This research establishes a foundation for the application of DESs in water decontamination processes, potentially revolutionizing FOG management and advancing water circularity initiatives. The study's findings align with multiple UN Sustainable Development Goals, including SDG 6 (Clean Water and Sanitation), SDG 14 (Life Below Water), and SDG 12 (Responsible Consumption and Production), offering a promising avenue for sustainable water treatment technologies.

水污染，尤其是油脂（FOG）对水源的污染，是一项重大的环境挑战，而气候变化又加剧了这一挑战。虽然传统的水资源回收设施（WRRFs）可以处理各种污染物，但对 FOG 的处理往往仍然是间接和次优的。本研究介绍了一种创新的、对环境无害的方法，即利用深共晶溶剂（DES），通过液液萃取，有针对性地去除和回收受污染水体中的 FOG。研究人员合成了一种由薄荷醇和乳酸组成的二元 DES，并评估了它在萃取油酸方面的功效。研究采用综合因子设计来优化关键操作参数，包括 DES 成分的摩尔比、溶剂与水的比例、接触时间、初始污染物浓度、搅拌速度和相分离时间。结果表明，在优化条件下，去除率超过 95%，峰值性能接近 99.5%。最佳参数被确定为薄荷醇与乳酸的摩尔比为 1:1，DES 与水的比例为 1:10，接触时间为 15 分钟，初始污染物浓度为 300 毫克/升-¹，搅拌速度为 500 转/分钟，相分离时间为 8 小时。这项研究为将 DES 应用于水净化工艺奠定了基础，有可能彻底改变 FOG 的管理并推进水循环计划。研究结果与多个联合国可持续发展目标相吻合，包括可持续发展目标 6（清洁水和卫生）、可持续发展目标 14（水下生命）和可持续发展目标 12（负责任的消费和生产），为可持续水处理技术提供了一条前景广阔的途径。

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引用次数: 0

The effect of ionic liquid on the solubility of polyetheretherketone (PEEK) 离子液体对聚醚醚酮（PEEK）溶解度的影响

Journal of Ionic Liquids

Pub Date : 2024-12-01 Epub Date: 2024-06-29 DOI: 10.1016/j.jil.2024.100103

Norazzah Afizah Jailani , Ainul Haqeem Abdul Jamil , Mohd Hilmi Noh , Muhammad Moniruzzaman

This paper aims to investigate the suitability of ionic liquids to be used as a co-solvent along with a few common solvents which are dimethyl sulfoxide (DMSO), acetonitrile, and water as the primary solvent to dissolve polyetheretherketone (PEEK). PEEK is an excellent colourless polymer with top-notch mechanical properties. Currently, there is no solvent capable of dissolving PEEK. Therefore, with ionic liquids (ILs) promising performance as solvents to various material including polymers which has been stated in previous literature, it is assumed that ILs would behave as an excellent solvent for PEEK. In this study, three different ionic liquids were chosen which are tetramethylammonium chloride (TMACL), tetramethylammonium hexafluorophosphate (TMAHFP), and tetramethylammonium sulphate (TMAS). PEEK was exposed to these solvent mixtures at ambient temperature and 50 °C for one hour. Fourier Transform Infrared (FTIR) spectroscopy was used to determine the functional group present in the samples. Results highlighted that PEEK did dissolve in DMSO/TMACL and DMSO/TMAHFP at ambient temperature. As the temperature increased to 50 °C, PEEK dissolution decreased in both mixtures. However, the opposite was observed for DMSO/TMAS. Finally, it was found that water and acetonitrile were not able to dissolve PEEK even with the addition of ILs.

本文旨在研究离子液体是否适合与二甲基亚砜（DMSO）、乙腈和水等几种常用溶剂一起用作溶解聚醚醚酮（PEEK）的主溶剂。PEEK 是一种性能优异的无色聚合物，具有一流的机械性能。目前，还没有一种溶剂能够溶解 PEEK。因此，鉴于离子液体（ILs）作为包括聚合物在内的各种材料的溶剂具有良好的性能，以前的文献中也提到过离子液体（ILs），因此认为离子液体（ILs）将成为 PEEK 的理想溶剂。本研究选择了三种不同的离子液体，即四甲基氯化铵（TMACL）、四甲基六氟磷酸铵（TMAHFP）和四甲基硫酸铵（TMAS）。将 PEEK 在环境温度和 50 °C 下暴露在这些溶剂混合物中一小时。傅立叶变换红外（FTIR）光谱用于确定样品中存在的官能团。结果表明，在环境温度下，PEEK 确实溶解在 DMSO/TMACL 和 DMSO/TMAHFP 中。随着温度升高到 50 °C，PEEK 在这两种混合物中的溶解度降低。然而，在 DMSO/TMAS 中却观察到了相反的情况。最后发现，即使添加了 IL，水和乙腈也无法溶解 PEEK。

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引用次数: 0

Room-temperature [C2mim]OAc crystal 室温[C2mim]OAc 晶体

Journal of Ionic Liquids

Pub Date : 2024-12-01 Epub Date: 2024-10-21 DOI: 10.1016/j.jil.2024.100119

Ayumi Hachisu , Akio Ohta , Kenji Takahashi , Kosuke Kuroda

1-Ethyl-3-methylimidazolium acetate ([C₂mim]OAc) is the most commonly used cellulose-dissolving ionic liquid and has been extensively studied for biorefinery applications. Although [C₂mim]OAc had been considered to be a liquid, we here found [C₂mim]OAc crystals at room temperature (around 25 °C) with a melting point of 44 °C. A plausible reason for the crystallization is shearing stress. [C₂mim]OAc seed crystals led to the crystallization of liquid [C₂mim]OAc.

1-乙基-3-甲基咪唑醋酸酯（[C2mim]OAc）是最常用的纤维素溶解离子液体，在生物精炼应用方面已被广泛研究。虽然[C2mim]OAc 一直被认为是一种液体，但我们在这里发现[C2mim]OAc 在室温（约 25 °C）下呈晶体状，熔点为 44 °C。结晶的一个合理原因是剪切应力。[C2mim]OAc 种子晶体导致液态 [C2mim]OAc 结晶。

引用次数: 0

Sustainable and versatile Aza-Michael additions promoted by acidic ionic liquids 酸性离子液体促进的可持续多功能 Aza-Michael 添加反应

Journal of Ionic Liquids

Pub Date : 2024-12-01 Epub Date: 2024-09-08 DOI: 10.1016/j.jil.2024.100111

Razieh Tajik , Najmedin Azizi , Zohreh Mirjafary , Hamid Saeidian

Acidic ionic liquids are a subset of ionic liquids where the cation or anion possess acidic properties with huge applications in various fields. Here we describe environmentally safe and highly efficient conjugate addition of aromatic and aliphatic amines to α, β-unsaturated compounds in the presence of novel acidic ionic liquids. The acidic ionic liquid catalyst was prepared by combining benzyl chloride with 2-(dimethylamino) ethanol and SnCl₂ in a simpler manner. The resulting acidic ionic liquid was characterized using SEM, EDS and FTIR spectroscopy. In the presence of ionic liquids, a wide variety of amines undergo facile conjugate addition to α, β-unsaturated compounds affording the corresponding β-amino compounds in good to excellent yields (72–97 %), shorter reaction times (1–4 h) and mild reaction conditions (60 °C). Furthermore, the study demonstrated the sustainability of the process by showcasing that the acidic ionic liquids could be reclaimed and reused for up to five cycles without compromising their catalytic effectiveness.

酸性离子液体是离子液体的一个子集，其中的阳离子或阴离子具有酸性，在各个领域有着广泛的应用。在此，我们介绍了在新型酸性离子液体存在下，芳香族和脂肪族胺与α、β-不饱和化合物的环境安全且高效的共轭加成反应。酸性离子液体催化剂是通过将氯化苄与 2-（二甲基氨基）乙醇和氯化锡以更简单的方式结合起来制备的。利用 SEM、EDS 和 FTIR 光谱对制备的酸性离子液体进行了表征。在离子液体存在的情况下，多种胺能与α、β-不饱和化合物发生简便的轭合加成反应，生成相应的 β-氨基化合物，产率从良好到极佳（72-97%），反应时间较短（1-4 小时），反应条件温和（60 °C）。此外，该研究还证明了该工艺的可持续性，酸性离子液体可以回收并重复使用长达五个周期，而不会影响其催化效果。

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引用次数: 0

Evaluation of two imidazolium dicyanamide ionic solvents for extractive desulfurization of model fuels 评估两种咪唑二氰胺离子溶剂在模型燃料萃取脱硫中的应用

Journal of Ionic Liquids

Pub Date : 2024-12-01 Epub Date: 2024-10-24 DOI: 10.1016/j.jil.2024.100121

Abubaker A. Mohammad, Adel S. AlJimaz, Khaled H.A.E. AlKhaldi, Adel F. Alenzi, Mohammad S. AlTuwaim

The objective of this study is to assess the efficacy of two specific ionic liquids, namely 1-ethyl-3-methylimidazolium dicyanamide and 1-benzyl-3-methylimidazolium dicyanamide, as potential substitutes for conventional solvents in the removal of sulfur compounds from model fuels, a common challenge in the petroleum industry. This research examines the liquid-liquid equilibria (LLE) data of three different ternary systems to evaluate the ability of these ionic liquids to extract thiophene from aliphatic hydrocarbons, n-dodecane or n-hexadecane, simulating kerosene and diesel fuels, respectively. Liquid-liquid equilibrium measurements were conducted for these mixtures at a temperature of 313.15 K and atmospheric pressure to determine the solvents thiophene distribution coefficients and selectivities. Additionally, the impact of the length of the paraffin alkyl chain was examined. The experimental data were found to conform to the thermodynamic NRTL model, with an average root mean square deviation (rmsd) of 0.2165. Both ionic liquids efficiently extracted thiophene from n-dodecane and n-hexadecane, highlighting their potential for producing ultra-low sulfur fuels.

本研究的目的是评估两种特定离子液体（即 1-乙基-3-甲基咪唑鎓二氰胺和 1-苄基-3-甲基咪唑鎓二氰胺）作为传统溶剂的潜在替代品在去除模型燃料中硫化合物方面的功效，这是石油工业面临的一个共同挑战。本研究考察了三种不同三元体系的液液平衡（LLE）数据，以评估这些离子液体从脂肪烃、正十二烷或正十六烷（分别模拟煤油和柴油燃料）中萃取噻吩的能力。在温度为 313.15 K 和大气压力下对这些混合物进行了液液平衡测量，以确定溶剂的噻吩分配系数和选择性。此外，还研究了石蜡烷基链长度的影响。实验数据符合热力学 NRTL 模型，平均均方根偏差 (rmsd) 为 0.2165。这两种离子液体都能有效地从正十二烷和正十六烷中提取噻吩，突出了它们在生产超低硫燃料方面的潜力。

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引用次数: 0

Anti-corrosion performance of ethyl dimethyl propylammonium bis (trifluoromethyl sulfonyl) imide (EDMPA-TFSI) for AA3003 alloy in acid chloride solutions in the presence and absence of potassium iodide 乙基二甲基丙基铵双（三氟甲基磺酰基）亚胺（EDMPA-TFSI）在有碘化钾和无碘化钾的酸性氯化物溶液中对 AA3003 合金的防腐蚀性能

Journal of Ionic Liquids

Pub Date : 2024-12-01 Epub Date: 2024-06-14 DOI: 10.1016/j.jil.2024.100099

Alexander I. Ikeuba , Brian E. Usibe , Nelson Essiet , Christopher U. Sonde , Benedict I. Ita , Fidelis E. Abeng , Arit A. Etim

This work aims to evaluate the anti-corrosion potential of ethyl dimethyl propylammonium bis (trifluoromethyl sulfonyl) imide (EDMPA-TFSI)-ionic liquid on AA3003 alloy in 0.5 M HCl solution in the presence and absence of potassium iodide at ambient and elevated temperatures. The corrosion inhibition of AA3003 alloy by EDMPA-TFSI in the presence of potassium iodide was evaluated using hydrogen evolution measurements at 303 K and 333 K. The results show that in the absence of potassium iodide, EDMPA-TFSI decelerates AA3003 corrosion in an acidic medium with a maximum inhibition efficiency of 93.2 % and 90.5 % obtained at 303 K and 333 K respectively. In the presence of potassium iodide, 94.7 % and 89.8 % inhibition efficiencies were obtained at 303 K and 333 K, respectively. This adsorption behavior is concordant with the Langmuir adsorption isotherm and the corrosion process in the presence of EDMPA-TFSI shows consistency with first-order reaction kinetics. New information on the application of EDMPA-TFSI as a workable corrosion inhibitor is provided herein.

本研究旨在评估乙基二甲基丙基铵双（三氟甲基磺酰基）亚胺（EDMPA-TFSI）离子液体在 0.5 M HCl 溶液中，在碘化钾存在和不存在的环境温度和高温条件下对 AA3003 合金的抗腐蚀潜力。结果表明，在没有碘化钾的情况下，EDMPA-TFSI 可减缓 AA3003 在酸性介质中的腐蚀，在 303 K 和 333 K 时的最大抑制效率分别为 93.2 % 和 90.5 %。在有碘化钾存在的情况下，303 K 和 333 K 时的抑制效率分别为 94.7% 和 89.8%。这种吸附行为与 Langmuir 吸附等温线一致，EDMPA-TFSI 存在下的腐蚀过程与一阶反应动力学一致。本文提供了将 EDMPA-TFSI 用作可行的缓蚀剂的新信息。

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引用次数: 0