Vapor Pressure Osmometry Studies of Aqueous Ionic Liquid–Carbohydrate Systems

Vapor Pressure Osmometry Studies of Aqueous Ionic Liquid–Carbohydrate Systems
复制标题

水性离子液体-碳水化合物体系的蒸气压渗透压研究

DOI:
10.1021/acs.jced.7b00719
复制
发表时间:
2018
影响因子:
--
通讯作者:
Rahmat Sadeghi
Rahmat Sadeghi
中科院分区:
工程技术3区
文献类型:
--
作者:
Bahman Jamehbozorg;Rahmat Sadeghi

文献摘要

被引文献

相似文献

在308.15 K下,对3种离子液体1-丁基-3-甲基咪唑四氟硼酸盐溶液进行了精密蒸气压渗透压法(VPO)测定([Bmim][BF 4]),1-丁基-3-甲基咪唑溴盐([Bmim][Br])和1-丁基-3-甲基咪唑鎓硫酸氢盐([Bmim][HSO 4]),在三种碳水化合物(蔗糖、麦芽糖和麦芽糖醇)的水溶液中,以及碳水化合物在这些离子液体的水溶液中的溶液。由于IL-碳水化合物之间存在不利的相互作用,所有研究的IL +碳水化合物水溶液体系均表现出溶出效应,这些体系在两相区的汽液平衡行为均表现出与半理想行为(aw + 1 [Bmim][HSO 4]<$[Bmim][Br])的负偏差。在[Bmim][BF 4]/碳水化合物水溶液体系中,其具有相分离性。
Precise vapor pressure osmometry (VPO) measurements at 308.15 K were conducted for solutions of three ILs, 1-butyl-3-methylimidazolium tetrafluoroborate ([Bmim][BF4]), 1-butyl-3-methylimidazolium bromide ([Bmim][Br]), and 1-butyl-3-methylimidazolium hydrogen sulfate ([Bmim][HSO4]), in aqueous solutions of three carbohydrates, sucrose, maltose, and maltitol, as well as for solutions of the carbohydrates in aqueous solutions of these ILs. Because of the unfavorable IL–carbohydrate interactions, all the investigated IL + carbohydrates aqueous systems show the soluting-out effect and vapor–liquid equilibria behavior of these systems in the monophasic region show the negative deviation from the semi-ideal behavior (aw + 1 [Bmim][HSO4] ≫ [Bmim][Br]. In the case of [Bmim][BF4]/carbohydrate aqueous systems, which have a phase se...