Dicationic molten salts(ionic liquids)as re-usable media for the controlled pyrolysis of cellulose to anhydrosugars

摘要

Molten dicationic imidazolium chloride or bromide salts,with short alkyl linker chains,have been found to be stable,re-usable media for the controlled pyrolysis of cellulose without acid pretreatment to give anhydrosugars,primarily levoglucosenone,at a substantially lower temperature(180 °C)than most previously reported methods(typically > 300 °C).