• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Chemistry: A European journal >Comparison of Physicochemical Properties of New Ionic Liquids Based on Imidazolium, Quaternary Ammonium, and Guanidinium Cations
【24h】

Comparison of Physicochemical Properties of New Ionic Liquids Based on Imidazolium, Quaternary Ammonium, and Guanidinium Cations

机译：基于咪唑鎓，季铵和胍鎓阳离子的新型离子液体的理化性质比较

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

More than 50 ionic liquids were prepared by using imidazolium, quaternary ammonium, and guanidini um cations and various anions. In these series, different cationic structures such as 1-benzyl-3-methylimidazolium [Bzmim]~+, 1,3-dibenzylimidazolium [BzmiBz]~+, 1-octyl-3-methylimidazol-ium [C_8mim]~+, 1-decyl-3-methylimid-azolium [C_(10)mim]~+, tricapryl-methyl-ammonium [Aliquat]~+, benzyltriethyl-ammonium [BzTEA]~+, phenyltrimethyl-ammonium [PhTMA]~+, and dimethyl di-hexylguanidinium [DMG]~+ were combined with anions, p-toluenesulfonate [TSA]~-, dicyanoamide [DCA]~-, sac-charine (2-sulfobenzoic acid imide sodium salt) [SAC]~-, trifluoroacetate [TFA]~-, bis(trifluoromethanesulfonyl)-imide [Tf_2N]~-, trifluoromethanesulfo-nate [TfO]~-, and thiocyanate [SCN]~-. Important physical data for these ionic liquids are collated, namely solubility in common solvents, viscosity, density, melting point and water content. Apart from the viscosity, the Newtonian and non-Newtonian behavior of these ionicliquids is also disclosed. Stability of these ionic liquids under thermal, basic, acidic, nucleophilic, and oxidative conditions was also studied. The features of the solid-liquid phase transition were analyzed, namely the glass transition temperature and the heat capacity jump associated with the transition from the non-equilibrium glass to the metastable supercooled liquid. A degradation temperature of each ionic liquid was also determined. Comparisons of the properties of various ionic liquids were made.
机译：通过使用咪唑鎓，季铵和胍鎓阳离子以及各种阴离子制备了50多种离子液体。在这些系列中，不同的阳离子结构，例如1-苄基-3-甲基咪唑鎓[Bzmim]〜+，1,3-二苄基咪唑鎓[BzmiBz]〜+，1-辛基-3-甲基咪唑鎓[C_8mim]〜+，1-癸基-3-甲基咪唑鎓[C_（10）mim]〜+，三辛基甲基铵[Aliquat]〜+，苄基三乙基铵[BzTEA]〜+，苯基三甲基铵[PhTMA]〜+和二甲基二-己基胍盐[DMG]〜+与阴离子，对甲苯磺酸盐[TSA]〜-，双氰胺[DCA]〜-，糖精（2-磺基苯甲酰亚胺钠盐）[SAC]〜-，三氟乙酸盐[TFA]〜 -，双（三氟甲磺酰基）-酰亚胺[Tf_2N]-，三氟甲磺酸盐[TfO]-和硫氰酸酯[SCN]-。整理了这些离子液体的重要物理数据，即在常见溶剂中的溶解度，粘度，密度，熔点和水含量。除了粘度之外，还公开了这些离子液体的牛顿和非牛顿行为。还研究了这些离子液体在热，碱性，酸性，亲核和氧化条件下的稳定性。分析了固液相转变的特征，即玻璃转变温度和与从非平衡玻璃到亚稳态过冷液体的转变相关的热容跃迁。还确定了每种离子液体的降解温度。比较了各种离子液体的性质。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号