| 摘要 |
The disclosure relates to a method of preparing lignin from lignocellulosic biomass, comprising: providing lignocellulosic biomass at a first pressure and at a first temperature, lignocellulosic biomass comprising insoluble lignin, soluble C6 saccharides and soluble lignin, reducing said first temperature to at least about 1°C above the glass transition temperature of lignin under said first pressure then reducing the pressure in less than about 1 second to precipitate said soluble and form a mixture comprising insoluble lignin, precipitated lignin and soluble C6 saccharides. The disclosure also relates to lignin processed from lignocellulosic biomass using supercritical or near critical fluid extraction. |
