Abstract ：

Ionic liquids (ILs) have the advantages of adjustable phase transition temperature, low non-flammability/volatility, good thermal and Chemical stability in terms of thermal physical properties, and are increasingly receiving attention in the field of thermal energy storage. Recently, NASA utilized eutectic phase change materials (PCM) composed of functional ionic liquids to manage the extreme space environment (solar ra-diation and extreme cold/hot) of manned spacecraft forfuture deep exploration. Although the concept of storing latent heat during the phase transition of ionic liquids is well-known, it has not yet been adopted in large-scale applications, and its potential still needs to be further explored. At present, most research focuses on the Performance of ionic liquids as heat transfer fluids, with little research and application on their phase change energy storage. The purpose of this article is to provide necessary Information for selecting well-researched ionic liquids and promote further research in this field. The article first discusses the defects of traditional phase change materials, and then reviews and summarizes common-ly used ionic liquids from the aspects of Chemical structure, phase change mechanism, and thermophysical properties. Finally, the application of ionic liquid-based phase change materials was introduced in detail. This paper proposed the structural design optimization of ionic liquids (ILs), undercooling control strategies, enthalpy enhancement pathways, and preparation cost control as research entry points, providing direction for subsequent research. © 2025 Cailiao Daobaoshe/ Materials Review. All rights reserved.

Keyword ：

imidazole ionic liquid phase change behavior phase change energy storage phase change material thermophysical property

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Abstract ：

为解决传统吸收过程中存在的能耗高、溶剂挥发性损失大问题,提出离子液体高效吸收废气中1,2-二氯乙烷(DCE)技术,在预测型分子热力学理论的指导下,从分子尺度到过程尺度系统研究了其应用前景.首先采用COSMO-RS模型进行离子液体结构(阳离子骨架结构、羧酸盐阴离子链长及氟化)对分离性能(1,2-二氯乙烷与氮气的选择性及溶解度)的影响分析,并筛选出适宜的离子液体(1-丁基-3-甲基咪唑醋酸盐,[BMIM][Ac]).通过实验方法测定不同离子液体中DCE的饱和吸收容量,验证COSMO-RS模型的适用性;并进一步考察吸收温度和DCE初始含量对[BMIM][Ac]吸收性能的影响,结果表明在20℃、常压、进气DCE为饱和含量时[BMIM][Ac]对DCE的饱和吸收容量达到2177 mg/g.在分子尺度,采用量子化学计算和波函数分析,探讨了离子液体吸收1,2-二氯乙烷的微观机理.结果表明吸收过程阴离子起主导作用,表现为强氢键作用和范德华(vdW)色散作用,阳离子与DCE间主要以C—H…Cl相互作用和vdW色散作用结合.最后在过程尺度,对离子液体吸收DCE的工艺进行了概念设计和流程优化,在给定条件下,离子液体对1,2-二氯乙烷的去除率达到99.88%.通过与传统有机溶剂进行对比,发现离子液体具有更低的产品损失、溶剂损失和能耗.表明采用离子液体吸收 1,2-二氯乙烷是一种不错的策略,具有一定的工业应用潜力.

Keyword ：

2-二氯乙烷 1 COSMO-RS模型 量子化学计算 流程模拟 离子液体 吸收

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Abstract ：

The traditional organic solvent absorption process is characterized by high energy consumption and large solvent volatility lass. To solve this problem, this work proposes to use ionic liquids (ILs) for efficient absorption of 1, 2-dichloroethane from waste gas, and guided by a predictive molecular thermodynamic model, this paper systematically investigated the practical application prospects from the molecular to system scales. The COSMO-RS model was used to screen 476 types of ILs. The effect of IL structure on the absorption of 1,2-dichloroethane was investigated from the cationic skeleton, the length of carboxylate anion carbon chain and the degree of fluorination. It was found that the nonaromatic non cyclic cations and the shorter carboxylate anion carbon chain length and the nonfluorinated anion structure were conducive to the better absorption of 1,2-dichloroethane by ILs. Finally, 1-butyl-3-methylimidazole acetate ([ BMIM] [ Ac]) was determined as the appropriate absorbent. The optimization experiment of absorption conditions was conducted at different temperatures and partial pressures, and the results showed that the saturated absorption capacity of [ BMIM] [ Ac] for 1,2-dichloroethane reached 2177 mg / g at 20℃ and atmospheric pressure. Through quantum chemistry calculation and wave function analysis, the microscopic mechanism of ionic liquid absorbing 1,2-dichloroethane was discussed. The reason for enhanced absorption is due to the strong HB effect and vdW dispersion effect, which are significantly contributed by anions. Cations are mainly combined with C—H … Cl interaction and vdW dispersion effect. Conceptual design and process simulation were conducted on the process of DCE absorption by ILs. An equilibrium stage model (EQ) was established for the absorption process, and COSMO-SAC was selected as the thermodynamic model. For the selected operating conditions, the removal rate of 1,2-dichloroethane by ILs reached 99. 88% . Compared to traditional organic solvents, it was found that ILs have lower product gas loss and energy consumption. This indicates that using ILs to absorb 1, 2-dichloroethane is a good strategy and has certain industrial potential. © 2025 Beijing University of Technology. All rights reserved.

Keyword ：

quantum chemistry calculation ionic liquids (ILs) COSMO-RS model 1,2-dichloroethane process simulation absorption method

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Abstract ：

为探究离子液体深度脱除尾气中氯乙烯的可行性,提出了离子液体高效吸收氯乙烯的技术.通过等体积饱和法测定了3种离子液体（[BMPYR][Tf

Keyword ：

吸收 流程模拟 离子液体 氯乙烯

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Abstract ：

采用后嫁接法将咪唑盐离子液体负载在SBA-15上制备了多相催化剂SBA-15-Imi并将其用于CO2环加成反应,研究了介孔氧化硅负载离子液体催化剂的失活机理.采用XRD、SEM、TEM、TG、FT-IR、EA等多种表征手段探究了潜在的失活原因;同时将基于分形理论、Porod理论的SAXS数据用于催化剂失活原因的分析,对催化剂的微观结构进行深入的研究.结果表明:催化剂循环使用5次后产率降低了 74％,失活原因主要是离子液体流失及有机物杂质沉积.

Keyword ：

CO2环加成反应 失活机理 多相催化剂 离子液体

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导电润滑剂对减少电接触过程的摩擦磨损,提高效率,延长服役寿命,促进电力电子、航空航天、轨道交通领域的绿色化、智能化和高效化发展具有重要作用.但现阶段导电润滑剂存在耐热性、分散稳定性、抗氧化性和抗腐蚀性能不足等问题,难以满足电磁场、温度场、摩擦热应力场及多场耦合复杂工况的苛刻要求.国内外学者对各种新型导电润滑添加剂进行了研究,包括石墨烯、碳纳米管、导电聚合物以及离子液体等,发现上述材料作为油基添加剂可在电接触副界面发生摩擦物理吸附和化学反应,形成摩擦反应膜,起到减小接触电阻、提高界面载流效率、减少接触副磨损、提高表面抗腐蚀性等作用.本文通过综述金属基、碳基、离子液体基以及复合型导电润滑添加剂的摩擦学行为的研究现状,分析电接触副间接触摩擦反应膜的尺寸、形态、分布以及力学性能对配副摩擦学行为的影响,总结了添加剂尺寸、成分、浓度、分散性对导电润滑剂减摩抗磨性能的影响规律,归纳了添加剂的润滑机理,并展望了导电润滑添加剂在电接触领域的发展趋势.

Keyword ：

电接触 导电润滑添加剂 摩擦学 润滑 反应润滑膜

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Abstract ：

近年来,在CO_2碳捕集领域中,离子液体发挥了极大的作用。提出采用离子液体作为吸收剂用于燃烧后同时捕集CO_2和水汽。首先,通过COSMO-RS模型筛选了522种离子液体,选择了1-丁基-3-甲基咪唑双(三氟甲烷磺酰)亚胺盐([BMIM][Tf_2N])和1-乙基-3-甲基咪唑四氟硼酸盐([EMIM][BF_4])这2种离子液体用于同时捕集CO_2和水汽。其次,采用COSMO-RS模型预测了CO_2在离子液体中的溶解度,检验了模型预测能力。此外,分析了2种离子液体与CO_2分子之间的相互作用,阐明了分离机制。最后,设计并优化了离子液体(纯[BMIM][Tf_2N]和[BMIM][Tf_2N]与[EMIM][BF_4]等摩尔混合物)作为吸收剂同时捕集CO_2和水汽的工业流程。结果表明,[BMIM][Tf_2N]和混合离子液体均表现出良好的CO_2和水的捕集效果,其中混合离子液体的捕集效果优于纯[BMIM][Tf2N]。在混合离子液体(摩尔比[BMIM][Tf_2N]∶[EMIM][BF_4]=1∶1)流程中,在优化的操作条件下,即质量液气比(4∶1)、吸收塔操作压力(3 MPa)、吸收剂再生温度(160℃)和压力(0.005 MPa)的优化组合,吸收塔产品气中CO_2含量可降低至88 ppm(摩尔分数),水汽几乎全部吸收,水含量可降低至1 ppm(摩尔分数)。COSMO-RS

Keyword ：

离子液体 过程模拟 COSMO-RS模型 二氧化碳捕集

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Abstract ：

金属有机骨架(Metal-organic framework,MOF)是具有较高的孔隙率、比表面积及高度可设计性的新型纳米材料，在吸附分离、固相萃取等诸多领域有着广泛应用。离子液体(Ionic liquid,IL)具有稳定性好、功能可设计的特点，它作为新型绿色溶剂有极大的应用前景。将IL负载到MOF的孔隙中，开发新型离子液体改性金属有机骨架(IL/MOF)复合材料，可以充分发挥两种材料的优势。本文讨论了迄今为止IL/MOF复合材料的所有构筑策略及在大气环境介质中捕集分离CO_2和去除水环境介质中污染物的应用和优势，并对未来IL/MOF复合材料在环境介质中的应用方面进行了总结和展望。

Keyword ：

环境污染物 构筑策略 金属有机骨架材料 离子液体 CO_2捕集分离 复合材料

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目的：基于一种新型离子液体1-羟乙基-3-甲基咪唑基Fe3O4纳米磁流体建立萃取分离番茄中过氧化氢酶的新方法。方法：考察1-羟乙基-3-甲基咪唑基Fe3O4纳米磁流体加入量、萃取时间、萃取温度等试验条件改变时提取酶活性的变化，通过响应面确定萃取的最理想试验条件：1-羟乙基-3-甲基咪唑基Fe3O4纳米磁流体最佳用量为176 mg，萃取温度35℃和萃取时间30 min。对比最佳试验萃取条件和传统萃取条件下番茄样品过氧化氢酶活性，结果 ：基于磁性纳米材料修饰的离子液体萃取的酶活性高，萃取时间缩短了10 min。结论：本试验为萃取高活性过氧化氢酶及其它蛋白酶类物质拓展了思路。

Keyword ：

萃取 酶活 过氧化氢酶 1-羟乙基-3-甲基咪唑基Fe3O4纳米磁流体

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为研究咪唑类离子液体吸收甲苯的性能,考察了甲苯体积分数、吸收温度、N_2进气速度和离子液体流量等对吸收甲苯性能的影响,并评价了离子液体的再生性能。结果表明,[Emim][Tf_2N]、[Bmim][Tf_2N]和[Omim][Tf_2N]这3种离子液体对甲苯的吸收率均在90%以上,且阳离子碳链越长,对甲苯的吸收率越高,3种离子液体对甲苯的吸收率大小为:[Omim][Tf_2N]>[Bmim][Tf_2N]>[Emim][Tf_2N]。甲苯体积分数为3 113μL/L、N_2进气速度为50 mL/min、离子液体流量为15 mL/min和吸收温度为20℃的条件下,离子液体对甲苯的吸收率最高。离子...

Keyword ：

甲苯 离子液体 绿色溶剂 吸收 挥发性有机物

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