Dry water (DW) is a kind of Pickering emulsion, where air serves as the nonpolar continuous phase in place of common organic solvents. Dry gel (DG) has also been prepared, which is superior to DW as a promising material for recyclable gas storage or gas separation. Here we add a new member, dry ionic liquid (D-IL), to those two kinds of ‘‘dry matter’’. Because of the non-volatility, D-IL is free from the fatal defect of DW and DG, i.e., collapse due to the temporal water vaporization in an open system. The chemical inertness of D-IL also provides potential applications for green chemistry, e.g., an organic solvent-free micro reaction vessel. In this study we report the first successful preparation of D-IL and discuss the preparation conditions such as properties of IL, IL/silica composition and water content.
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