Thermoresponsive ionic liquid/water mixtures for separation and purification technologies
Thermoresponsive ionic liquid/water mixtures for separation and purification technologies
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DOI：
10.1016/j.seppur.2020.117286
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发表时间：
2020-11-15
影响因子：
8.6
通讯作者：
Ohno, Hiroyuki
中科院分区：
文献类型：
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作者：
Deguchi, Yuki;Nakamura, Nobuhumi;Ohno, Hiroyuki
一些具有中等疏水性的离子液体与水混合后表现出独特的相行为，如低临界溶液温度（LCST）型相变。这种IL/water混合物在一定温度下得到均匀的透明溶液，但加热后出现液/液相分离。从含水量的角度来看，温度可以控制这些液体的水化程度。即使在相分离之后，IL相仍然含有相当数量的水。这应该有助于溶解包括蛋白质在内的许多物质。在这篇简短的综述中，我们介绍了典型的离子离子来显示这种lst类型的相变，并考虑了显示这种相变对组分离子的要求。此外，我们还解释了控制这种热责任的方法。一些分离技术也显示了这一相变的应用。
Some ionic liquids (ILs) having moderate hydrophobicity show unique phase behavior after mixing them with water such as lower critical solution temperature (LCST)-type phase transition. Such IL/water mixtures are obtained as a homogeneous clear solution at a certain temperature, but it shows liquid/liquid phase separation after heating them up. From the viewpoint of water content, hydration degree of these ILs can be controlled by temperature. Even after the phase-separation, the IL phase still contains a considerable amount of water. This should be helpful in dissolving many materials including proteins. In this mini review, we introduce typical ILs to show this LCST-type phase transition to consider the requirements for component ions to show this transition. Also, we explain the way to control this thermoresponsibility. Some separation techniques are also shown as an application of this phase change.