The emissions of acidic substances on industrial lead to serious environmental roblems such as soil and water contamination, Along with environmental protection oice rising, the research of rational design of acid become focus. We desighed a strategy recycle the widely used liquid acid catalysts in industry.To demonstrate the feasibility of this strategy, four perfluorobutyl ulfonylimide-containing imidazolium-based zwitterions was synthesized. Their tructrues were confirmed by FT-IR, 1H NMR,13C NMR,19F NMR...