A new methodology for zeolite analogue synthesis using ionic liquids as solvent and template

Abstract

Here we report a new method of preparing aluminophosphate zeolite analogues using ionic liquids [1] as both solvent and template [2]. An imidazolium-based ionic liquid leads to four zeotype frameworks under different conditions. One material has a novel, structure type with unusual structural characteristics that can be traced back to the solvent chemistry. Because of the vanishingly low vapour pressure of ionic liquids this synthesis, takes place at ambient pressure, eliminating any safety concerns associated with high hydrothermal pressures. The ionic liquid can also be recycled for further use.