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    题名 作者 年代 出处 被引量
1新型碱性离子液体的合成及其在催化制备生物柴油中的应用显示文摘通过两步反应合成了咪唑阴离子型碱性离子液体1-丁基-3-甲基咪唑咪唑盐[Bmim]Im,经1H NMR、13C NMR和FT-IR分析确认了产物结构。利用L9正交表,选取3水平4因素对[Bmim]Im催化大豆油制备生物柴油的催化性能进行正交试验,分别考察了催化剂用量、醇/油摩尔比、反应温度和反应时间对生物柴油产率的影响。结果表明,[Bmim]Im对大豆油与甲醇的酯交换反应具有较高的催化活性,在60℃下,[Bmim]Im用量为原料油的6%时,反应15min后生物柴油产率即可高达94.17%;[Bmim]Im催化制备生物柴油的最佳工艺条件为:催化剂质量分数8%,醇/油摩尔比6,反应时间60min,反应温度60℃,在此条件下,生物柴油的产率可达95.76%。该催化剂稳定性良好,可循环利用。李雪菲 王瑶 赵辉 李长虹 2012石油学报(石油加工)2012,28,2:11
2离子液体萃取有机物的研究进展显示文摘离子液体具有结构可调控、不挥发以及对目标物具有一定选择性等特点,因而近来在萃取领域的应用日益受到关注,被认为是一种可替代传统溶剂的新型绿色溶剂。本文从液-液萃取、固相萃取、液相微萃取、固相微萃取、超声萃取、微波萃取6个方面综述了离子液体在萃取有机物中的应用。吕廷婷 季金苟 夏之宁 蒋宏贵 2010化工进展2010,29,5:10
3离子液体吸收分离一氧化碳的研究进展显示文摘离子液体(ILs)作为一种新型的绿色溶剂在吸收和分离一氧化碳(CO)方面显示出了独特的优异性和潜在的应用价值。对近年来ILs参与CO吸收分离的研究工作进展进行了综述,主要包括常规ILs、阴离子功能化ILs、ILs/Cu(Ⅰ)盐和ILs支撑液膜。重点论述了CO在ILs中的溶解度及对其他气体的选择性,并与ILs吸收分离二氧化碳(CO2)性能进行了比较;着重讨论了阴阳离子种类、取代基类型、温度、压力等因素对ILs吸收分离CO性能的影响,并介绍了ILs吸收CO的机理。最后,对设计合成新型功能化ILs应用于高效吸收分离CO提出了一些建议。刘佳佳 付雪 许映杰 2020化工学报2020,71,1:7
4[Psmim]HSO_4离子液体催化液化木材及其产物表征显示文摘合成了1-磺酸丙基-3-甲基咪唑硫酸氢盐离子液体([Psmim]HSO4),对其结构进行了傅里叶红外光谱(FT-IR)和核磁共振(13C NMR)表征。以正辛醇为溶剂,初步考察了该离子液体对杉木屑液化的催化性能,并对残渣、重油和轻油液化产物进行了FT-IR、X射线粉末衍射(XRD)、热重分析(TG)、气质联用(GC-MS)表征。FT-IR和13C NMR分析结果证实了合成产物与目标离子液体结构一致。液化实验结果表明该离子液体具有较好的催化液化性能,10 g杉木屑、60 g正辛醇在催化剂用量8.6 mmol、150℃、60 min条件下,木屑的液化率达66.5%。液化残渣表面的木质素衍生物含量高;轻油主要由纤维素和半纤维素的液化产物组成,重油主要由木质素的液化产物组成。郑怀玉 卢泽湘 范立维 黄彪 廖益强 胡阳 2014林产化学与工业2014,34,2:6
5微波辐射下1-烯丙基-3-甲基咪唑离子液体的合成显示文摘考察了氯化1-烯丙基-3-甲基咪唑([amim]Cl)和1-烯丙基-3-甲基咪唑四氟硼酸盐([amim]BF4)离子液体的微波合成工艺条件,并用红外光谱表征其结构。2种目标产物产率由传统加热下的80.3%和76.2%提高到微波辐射下的86.1%和95.4%,反应时间缩短为传统的1/200和1/67。确定的最佳反应条件为:微波功率均为280W,照射时间分别为125s和105s。周建华 朱佳媚 董洁 张双全 2009化工中间体2009,5,12:4
6双核磺酸型离子液体催化合成橡胶防老剂RD显示文摘以咪唑、乙醇钠、1,4-二溴丁烷、1,3-丙磺酸内酯为主要原料,合成了磺酸功能化的咪唑类双核离子液体[MPS]_2HSO_4^-,并采用傅里叶红外光谱仪(FT-IR)、核磁共振氢谱(~1H NMR)等对其结构进行了表征。将[MPS]_2HSO_4^-作为催化剂应用于苯胺与丙酮一步合成橡胶防老剂RD的反应中,并详细探讨确定了本反应的最佳工艺条件。催化性能测试结果表明,[MPS]_2HSO_4^-具有良好的催化性能,在反应温度为140℃、催化剂和苯胺的质量比为6∶28、丙酮滴加时间为5 h、酮胺摩尔比为6∶1条件下,苯胺的转化率可达93.5%,RD的选择性达40.2%。束艳方 梁金花 刘超英 杨晓瑞 朱建良 2017南京工业大学学报(自然科学版)2017,39,3:3
7Ionic liquids: Efficient solvent and medium for the transformation of renewable lignocellulose显示文摘Carbon-enriched lignocelluloses are regarded as the perfect alternative for nonrenewable fossil fuel, and have a great potential to alleviate the increasing energy crisis and climate change. However, the tightly covalent structure and strong intra and in- ter-molecular hydrogen bonding in lignocellulose make it high recalcitrance to transformation due to the poor solubility in wa- ter or common organic solvents. Dissolution and transformation of lignocellulose and its constituents in ionic liquids have therefore attracted much attention recently due to the tunable physical-chemical properties. Here, ionic liquids with excellent dissolving capability for biomass and its ingredients were examined. The technologies for lignocellulose biorefining in the presence of ionic liquid solvents or catalysts were also summarized. Some pertinent suggestions for the future catalytic conver- sion and unitization of this sustained carbon-rich resource are proposed.LONG JinXing LI XueHui WANG LeFu ZHANG Ning 2012Science China Chemistry2012,55,8:3
8镍在BMIC-GL离子液体中的阳极溶解行为显示文摘采用恒电流溶解法和动电位极化曲线研究了BMIC-GL(1-butyl-3-methylimidazolium chloride-glycerin)离子液体中镍的阳极溶解行为.恒电流溶解结果表明,镍阳极的电化学溶解反应为Ni-2e=Ni2+;动电位极化曲线研究表明,镍的阳极溶解过程可以分为电化学反应控制区、混合控制区、扩散控制区.在电位范围为0.65~1.1 V条件下,镍阳极溶解的化学反应主要受电化学控制,镍的阳极溶解速率随着电位的正移而逐渐增大;当电位范围为1.1~1.3V时,镍阳极的溶解逐渐趋于稳定,此时化学反应受混合控制(既受电化学控制,同时又受扩散控制);当电位大于1.3V以后,镍阳极溶解速率增大到一定程度,不再随着电位的正移而发生改变,镍溶解进入扩散控制区.升高温度,增加搅拌速度,增加离子液体中Ni2+的浓度都可以增加镍的阳极溶解极限电流密度,而且镍片经过阳极溶解处理后具有良好的抛光效果.赵霁雯 徐存英 华一新 李坚 刘海鹏 王震 2014昆明理工大学学报(自然科学版)2014,39,3:2
9室温离子液体在纳米材料制备中的应用显示文摘室温离子液体作为一种新型的优良溶剂,在纳米材料合成中具有诱人的应用前景。本文简要介绍了近几年来室温离子液体在单质、氧化物、硫化物、硒化物、碲化物和含氧酸盐等纳米材料制备中应用的一些研究进展,重点介绍了我们实验室最近有关微波辅助离子液体法快速制备一维纳米材料方面的研究工作,并讨论了室温离子液体在纳米材料制备过程中的主要作用。王卫伟 朱英杰 2008世界科技研究与发展2008,30,4:2
10离子色谱法在碱性离子液体合成中的应用显示文摘利用离子色谱法对阴离子为乙酸根的碱性离子液体合成过程进行跟踪,探讨了离子液体前驱体、溶剂种类及所用的交换试剂等对交换过程的影响。结果发现,以甲醇为溶剂,利用乙酸钾与烷基咪唑氯化物离子液体前驱体进行离子交换,可获得目标阴离子含量为96 mol%(摩尔分数)的产物。陈鹏 宋红兵 李雪辉 王芙蓉 2009广州化工2009,37,3:1
11Numerical simulation of CO_2-ionic liquid flow in a stirred tank显示文摘Ionic liquids(ILs) are new solvents that represent a breakthrough for absorption and conversion of CO2. However, there has been little research on the hydrodynamics of gas-IL systems in stirred tanks, and this has become a bottleneck for development of IL-based reactors. In the present study, a CO2-IL([bmim][BF4]) flow in a stirred tank was studied using computational fluid dynamics(CFD). A new drag coefficient model that is specific to a gas-ionic liquid system and a population balance model(PBM) were adopted to describe the bubble behavior, such as gas holdup and bubble size evolution, precisely. The predicted results for the total gas holdup and local Sauter diameter agree well with the experimental data. The influences of the gassing rate, agitation speed, and temperature on local gas holdup, bubble size distribution, and interfacial area for the CO2-[bmim][BF4] system were also investigated. The results of this study provide fundamental information for designing gas-IL systems for stirred tanks.Zailong Ouyang Di Bao Xin Zhang Haifeng Dong Ruiyi Yan Xiangping Zhang Suojiang Zhang 2015Science China(Information Sciences)2015,58,12:1
12用离子液体从废液晶显示器硫酸浸出液中萃取铟显示文摘研究了以离子液体为溶剂,用二(2-乙基己基磷酸)(P204)萃取废液晶显示器硫酸浸出液中的In(Ⅲ),考察了P204体积分数、水相酸度、相比、萃取时间对铟萃取率的影响。结果表明,在P204体积分数15%、水相pH=1.1、相比Vo/Va=1/5、萃取时间4min条件下,铟萃取率达95.8%。翟袁桢 徐金球 2015湿法冶金2015,34,5:1
13新型双核碱性离子液体的合成及其催化制备生物柴油显示文摘以吗啡啉、溴代十二烷和1,4-二溴丁烷为原料,合成了双-(N-十二烷基-吗啡啉)亚丁基双氢氧化物双核碱性离子液体([Nbmd]OH),采用1H-NMR对合成的离子液体进行结构分析,通过TGA对离子液体的热稳定性进行考察,同时对离子液体的溶解性和碱性进行了测定。然后以大豆油和甲醇的酯交换反应为模型反应,进行该离子液体的催化活性考察实验。结果表明:该离子液体在低于200℃的条件下具有良好的热稳定性;该离子液体可溶于甲醇,不溶于大豆油;碱性略低于相同质量浓度的KOH水溶液;当甲醇与大豆油摩尔比为14∶1、离子液体用量为大豆油质量的7%、反应时间为8 h、反应温度为60℃时,生物柴油收率可以达到84.5%,且该离子液体经回收、真空干燥,重复使用6次后生物柴油收率仍可达到80.6%。刘盈汐 夏晨超 王璐璐 吕振波 金彪 2016中国油脂2016,41,6:1
14《工业催化》荣获第七届全国石油和化工行业优秀期刊评选一等奖显示文摘在第七届全国石油和化工行业优秀期刊评选工作中,由陕西延长石油(集团)有限责任公司主管、西北化工研究院主办的《工业催化》荣获优秀期刊一等奖(专业技术类)。2011工业催化2011,19,12:0
15Prediction of the thermodynamic properties of 1-alkyl-3-methylimidazolium lactate ionic liquids [C_nmim][Lact](n=2,3,4,5,and 6) by parachor显示文摘An ionic liquid (IL) based on lactate,1-butyl-3-methylimidazolium lactate ([C4mim][Lact]),has been prepared and characterized by 1H nuclear magnetic resonance (NMR) spectroscopy and differential scanning calorimetry (DSC).Since the IL can form strong hydrogen bonds with water,trace water is a problematic impurity in the IL.Using the standard addition method (SAM),the density,refractive index and surface tension of [C4mim][Lact] were measured in the temperature range (308.15 to 343.15 ± 0.05) K.On the basis of the experimental data,the parachor and molar volume for [C4mim][Lact],and the molecular volume V m,surface tension γ,molar enthalpy of vaporization △lgHm 0,refractive index n D,and the thermal expansion coefficients,for the homologues [Cnmim][Lact] (n=2,3,4,5,and 6) were estimated using semi-empirical methods.The estimated values are in good agreement with the experimental data.FANG DaWei 1,3,TONG Jing 2,GUAN Wei 2,WANG Han 2 & YANG JiaZhen 1,3 1 Institute of Rare and Scattered Elements Chemistry,Liaoning University,Shenyang 110036,China 2 College of Chemistry,Liaoning University,Shenyang 110036,China 3 Key Laboratory of Rare and Scattered Elements,Liaoning Province,Shenyang 110036,China 2010Science China Chemistry2010,53,12:0
16咪唑离子液体在砂土中的吸附与运移显示文摘研究了三种咪唑离子液体([C_2MIM][PF_6],[C_4MIM][PF_6]和[C_4MIM][BF_4])在砂土环境中的静态吸附与动态运移规律,讨论了离子液体阴/阳离子结构变化对其吸附/运移行为的影响。结果表明:三种离子液体的砂土吸附系数(Kd)介于4.3~7.7 L·kg^(-1)之间,整体吸附量偏低,暗示其环境迁移能力强。在静态吸附中,随着阳离子碳链长度从C2增加到C4,离子液体的吸附能力得到提升,迁移能力随之下降,相比而言,阴离子(PF_6^-和BF_4^-)的改变对Kd几乎没有影响;然而在动态柱实验中,阴离子变化能影响阻滞系数R值的大小,这得益于离子液体在土柱中经历反复的吸附-脱附过程,从而使阴离子之间的差异得以放大。首次采用CXTFIT软件对离子液体的运移进行数值模拟发现,其观察值和模拟值高度吻合,表明非平衡模型适合定量描述和预测离子液体在环境中的运移规律。董志强 徐素玮 孙境蔚 施心怡 邱宇平 2017农业环境科学学报2017,36,5:0
17阴离子的对称性和柔韧性对纳米结构特性和离子液体粘度的作用(英文)显示文摘The transport properties of ionic liquids(ILs) are crucial properties in view of their applications in electrochemical devices. One of the most important advantages of ILs is that their chemical–physical properties and consequently their bulk performances can be well tuned by optimizing the chemical structures of their ions. This will require elucidating the structural features of the ions that fundamentally determine the characteristics of the nanostructures and the viscosities of ILs. Here we showed for the first time that the 'rigidity', the order,and the compactness of the three-dimensional ionic networks generated by the anions and the cation head groups determine the formation and the sizes of the nanostructures in the apolar domains of ILs. We also found that the properties of ionic networks are governed by the conformational flexibility and the symmetry of the anion and/or the cation head group. The thermal stability of the nanostructures of ILs was shown to be controlled by the sensitivity of the conformational equilibrium of the anion to the change of temperature. We showed that the viscosity of ILs is strongly related to the symmetry and the flexibility of the constitute ions rather than to the size of the nanostructures of ILs. Therefore, the characteristics of the nanostructures and the viscosities of ILs, especially the thermal stability of the nanostructures, can be fine-tuned by tailoring the symmetry and the conformational flexibility of the anion.齐建光 胡玉峰 赵亚美 李吉广 2015Chinese Journal of Chemical Engineering2015,23,9:0
18Theoretical modification of the negative Miller capacitance during the switching transients of IGBTs显示文摘The insulated gate bipolar transistor(IGBT) has negative Miller capacitance during switching transients.It has conventionally been attributed to the voltage dependency of the Miller capacitance.However this explanation has physical ambiguity,yet,it lacks a discussion of the conditions for the occurrence of negative Miller capacitance as well.We argue that it is the current dependence to the Miller capacitance that results in the negative case.In this paper,we provide a modification to the theoretical analysis of this phenomenon.The occurrence condition for it and the device parameters about it are discussed.It is discovered that the negative Miller capacitance must occur during the turn-off process for any IGBT,while it is relatively difficult during the turn-on process.At the device design level,the current gain of the PNP transistor in the IGBT is an important factor for the negative Miller capacitance.滕渊 朱阳军 韩郑生 叶甜春 2016Journal of Semiconductors2016,37,7:0
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