Ionic liquids (ILs) have received strong attention as promising green solvent for lignocellulose pretreatment. 1 We recently reported that amino acid type ionic liquids dissolved cellulose very well under mild conditions.2 Here, we report an efficient lignin extraction method based on the ionic liquid technology: several types of amino acid ILs dissolved lignin very well even at 60�C and green preparation of lignin from woods has thus been accomplished: 16 wt% of lignin was obtained from Japanese cedar chips using 1-(2-methoxyethyl)-1-methylpyrrolidinium lysine ([P1ME][Lys]) as extraction solvent. References 1. Fort, D. A.; Remsing, R. C.; Swatloski, R. P.; Moyna, P.; Moyna, G.; Rogers, R. D. Green Chem. 2007 , 9, 63-69.Ohira, K.; Abe, Y.; Suzuki, K.; Mizuno, M.; Amano, Y.; Itoh, T. ChemSusChem. 2012 , 5, 388-391.

Design of ionic liquids for green lignin extraction from woods

244th National Meeting (2012)

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