Properties of ionic liquids and their use as media for hydrogen storage and other applications

Abstract

This book provides description of various ionic liquids (ILs) and deep eutectic solvents (DESs). The ILs and DESs are of interest to chemists and material scientists working in the field of green chemistry due to their inherent low volatility. These compounds possess many special properties that have led to their use as media for materials processing. First chapter of the book is devoted to the application of ILs in storing hydrogen. It was shown that the ILs have a great potential for a cost-efficient storage technology for hydrogen that allows to transport hydrogen between different locations and manage it as a useful resource in their operations. The second chapter considers the new method to run the processes of the dissolution of animal hair in the DESs safely and more environmentally friendly than current processes based on use of sulfur reducing products (sulfides, sulfhydrate, etc.) with enzymes. It was demonstrated that when the DESs are used instead of water for dissolving sulfur-containing compounds, such as sodium sulfide, the lesser amount of sulfur-containing compounds would be required. The final third chapter is devoted to the investigation of thermochromic behavior of two triphenylmethanes dyes such as Malachite Green Carbinol Hydrochloride (MG) and Brilliant Green (BG) dissolved in DESs. The linear relationship between the spectrophotometric parameters of solutions MG and BG subjected to thermochromic fatigue and number of heating up-cooling down cycles is determined and possibility of its practical application is discussed.