What is claimed is:
1. A method for pretreating lignocellulosic biomass comprising:
reacting an acid-base mixture catalyst having a pH value of 1 to 4 with the lignocellulosic biomass.
CROSS-REFERENCE TO RELATED APPLICATIONS
This application is the U.S. National Phase of International Patent Application No. PCT/KR2015/004158, filed Apr. 27, 2015, which claims priority to Korea Patent Application No. 10-2014-0050186, filed Apr. 25, 2014, the disclosures of which are incorporated herein by reference.