Over the past decade ionic liquids (ILs) have attracted much attention in science and technology. Potential areas of application include novel syntheses, electrolyte devices, photochemical cells, separation, and catalysis.[1–3] Protic ionic liquids (PILs) are an important subgroup of ionic liquids formed by a combination of equimolar amounts of a Brønsted acid and a Brønsted base.[4–10] The key property that distinguishes PILs from ...