共查询到19条相似文献,搜索用时 93 毫秒
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离子液体作为一种绿色溶剂可以有效地解决目前存在的能源和环境问题。由于离子液体相对于其它有机溶剂具较好的化学稳定性,使其在众多的研究领域受到越来越多的关注。但是离子液体存在着合成成本较高、回收难度较大等技术瓶颈问题,因而阻碍了它的广泛应用。而安全、有效地回收离子液体能够解决这一难点。离子液体的回收方法有减压蒸馏、膜分离、盐析、液液萃取等。离子液体的有效回收可以促进化学合成、纤维素提取等领域的快速发展。 相似文献
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介绍了停车洗槽水、树脂塔酸碱再生水、泵用机封冷却水等的回收利用措施,实施后,节约去离子水价值6.5万元/a,回收废碱价值28万元/a. 相似文献
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孙宏伟 《中国化学工程学报》2005,13(6):830-834
Ionic liquids (ILs) are green solvents that have attracted great attention in recent years due to their unique properties. In this paper the latest progresses in both the fundamental studies and applications of ILs have been summarized, with the emphasis on the topics of physical properties, catalytic reactions, and biochemical engineering. The critical problems in the applications of the ILs have been addresses, and the prospective of the ILs were finally predicted. 相似文献
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综述了含硼离子液体作为绿色推进剂的高能燃料的研究过程,总结了含硼离子液体作为液体推进剂的优势和不足,指出了未来含硼离子液体推进剂的发展方向。 相似文献
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1,3-二烷基咪唑类离子液体的合成研究 总被引:5,自引:0,他引:5
通过N-烷基化反应制备了中间产物氯化-1-丁基-3-甲基咪唑[BMIM]Cl离子液体,得到较佳的制备条件。引入微波辅助改进了[BMIM]Cl合成方法。同时在超声波辅助下,通过离子交换制备了亲水性离子液体1-丁基-3-甲基咪唑四氟硼酸盐[BMIM]BF4以及憎水性离子液体1-丁基-3-甲基咪唑六氟磷酸盐[BMIM]PF6。结果发现,微波辅助和超声波辅助可以加速反应速度。产物结构用IR和1H NMR进行表征。 相似文献
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V.V. Shevchenko A.V. Stryutsky N.S. Klymenko M.A. Gumenna A.A. Fomenko V.N. Bliznyuk V.V. Trachevsky V.V. Davydenko V.V. Tsukruk 《Polymer》2014
We report on synthesis of linear and hyperbranched protic and aprotic anionic oligomeric ionic liquids (OILs). α,ω-Dicarboxy- and α,ω-disulfooligo(ethylene oxide)s, α-carboxy- and α-sulfooligo(ethylene oxide monomethyl ether)s, and di[(α-carboxyoligo(ethylene oxide monomethyl ether)] were synthesized using reaction of oligo(ethylene oxide diol) (MW 1000) and its monomethyl ether (MW 750) with phthalic-, 2-sulfobenzoic anhydride and pyromellitic dianhydride. Di- and mono-substituted anionic OILs were prepared by neutralizing these compounds with N-methylimidazole. Aprotic anionic OILs were synthesized by reaction of sodium salts of the prepared oligomeric di- and monoacids with 1,3-dimethyl imidazolium iodide. Hyperbranched protic and aprotic anionic OILs were prepared in a similar manner. The structure, thermal stability and ionic conductivity of the synthesized compounds in the range of 20–120 °C in anhydrous conditions is governed by the molecular architecture of the oligomeric chains and the type of the cation/anion moieties. OILs under study are amorphous at room temperature but some protic and aprotic linear-chain OILs prone to form a low melting temperature crystalline phase. The ionic conductivity of the synthesized OILs can be varied in broad range reaching 10−3 S/cm value at temperatures over 100 °C under anhydrous conditions. 相似文献
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离子液体应用研究进展 总被引:14,自引:2,他引:12
由于离子液体具有较低的熔点、良好的导电性和可以忽略的蒸汽压等优点,引起了科学界和工业界的广泛瞩目.随着研究的日益深入,室温离子液体已经被开发和应用到诸多领域.对室温离子液体应用的研究进展进行了综述,详细介绍了离子液体在电化学、化学反应、分离过程以及在新材料等方面的应用.并对该领域的研究前景作了展望. 相似文献
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Qingbin Liu Fred van Rantwijk Roger A Sheldon 《Journal of chemical technology and biotechnology (Oxford, Oxfordshire : 1986)》2006,81(3):401-405
Ionic liquids were synthesised that consisted of two methylimidazolium rings joined by a spacer 1–12 carbon atoms in length. The bis(triflic)imides with spacer ≤C4 were solids; the others were liquid at room temperature. The polarity of the dication liquids and their performance in the extraction of phenol from water were compared with those of similar monocationic liquids. Copyright © 2005 Society of Chemical Industry 相似文献
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合成了两种传统型离子液体[bmim]BF4和[emim]BF4及含有胺基和羟基的功能型离子液体[NH2P-mim]Br、[NH2-e-mim]BF4、[OH-e-mim]Br,并对合成的离子液体进行IR和1H NMR表征。常温常压条件下,对所合成的离子液体开展CO2吸收性能实验,发现胺基改性离子液体[NH2P-mim]Br、[NH2-e-mim]BF4和羟基改性离子液体[OH-e-mim]Br的CO2饱和吸收量分别是常规离子液体的3~9倍和1~2倍,且含有乙基官能团的离子液体吸收平衡时间普遍较短。最终探讨了温度、CO2分压等对功能型离子液体吸收CO2过程的影响。 相似文献