公开(公告)号：WO2016197233A1

公开(公告)日：2016-12-15

申请号：PCT/CA2016/000169

申请日：2016-06-09

Applicant: UNIVERSITE LAVAL

Inventor： STEVANOVIC, Tatjana ,  KOUMBA YOYA, Georges

IPC: C08H7/00 ,  C08H8/00 ,  D21C1/00

CPC classification number: C08H8/00 ,  C08L97/005 ,  D21C1/04 ,  D21C3/04 ,  D21C3/20 ,  D21C11/0007

Abstract: A highly pure lignin comprising a lignin content of at least 97% and characterized by a low carbohydrate content and substantially no sulfur content is disclosed herein. An organosolv process for extracting the highly pure lignin is also disclosed herein. The process comprises pretreating a lignocellulosic material in a first polar protic solvent, to remove extractive compounds and to provide a pretreated lignocellulosic material; and treating the pretreated lignocellulosic material with a Lewis acid in a second polar protic solvent.

Abstract translation: 本文公开了包含至少97％的木质素含量并且特征在于低碳水化合物含量且基本上不含硫含量的高纯度木质素。 本文还公开了用于提取高纯度木质素的有机溶剂法。 该方法包括在第一极性质子溶剂中预处理木质纤维素材料，以除去萃取化合物并提供预处理的木质纤维素材料; 并用路易斯酸在第二极性质子溶剂中处理预处理的木质纤维素材料。