A Simple Approach to Achieve Self-Buffering Protic Ionic Liquid-Water Mixtures

作者：Han Qi^*; Wang Xungai; Byrne Nolene

来源：ChemistrySelect, 2017, 2(15): 4294-4299.

DOI：10.1002/slct.201700651

• Dissociation
• ionicity
• protic ionic liquid
• self-buffering

Ionic liquid (IL)-water mixtures have drawn increasing attention in a range of applications ranging from chemical synthesis and separation to bioscience and energy applications. The acid-basic nature of ILs is often an important property to be considered when selecting and designing ILs. Herein, we evaluated this IL property by correlating the stoichiometry of a protic IL and pH of IL-water mixtures. We then developed a simple method to achieve self-buffering protic IL-water mixtures by titrating buffering agents. The rule of buffering protic IL-water mixtures was proposed to be linearly related to pIL ion concentration and correlated with ionicity. Through this approach, self-buffering capability can be achieved in protic IL-water mixtures without significantly changing the ion concentration.

• 出版日期2017-5-23