METHOD FOR SELECTIVELY PREPARING EVOGLUCOSENONE (LGO) AND OTHER ANHYDROSUGARS FROM BIOMASS IN POLAR APROTIC SOLVENTS

摘要

A method to produce 5-hydroxymethylfurfural (HMF) is described in which a reactant including cellulose, lignocellulose, or a combination thereof, in a reaction mixture of a polar, aprotic solvent and an acid is reacted for a time, at a temperature, and at a hydrogen ion concentration wherein at least a portion of the cellulose or lignocellulose present in the reactant is converted to HMF. The reaction mixture is initially substantially devoid of water. As the reaction proceeds, dehydration of intermediates causes the water concentration in the reaction mixture to rise to no more than about 2.0 wt % water.

主权项

1. A method to produce levoglucosenone (LGO), the method comprising:
reacting a reactant comprising cellulose, lignocellulose, cellobiose, glucose, or a combination thereof, in a reaction mixture comprising a polar, aprotic solvent and an acid, for a time, at a temperature, and at a hydrogen ion concentration wherein at least a portion of the cellulose, lignocellulose, cellobiose, or glucose present in the reactant is converted to LGO.