| 发明名称 | Fractionation of a lignocellulosic material | ||
| 摘要 | A method for fractionating a lignocellulosic material, the method comprising; contacting (2) the lignocellulosic material with an ionic liquid (3) and dissolving the lignocellulosic material therein, providing a second liquid (7) which is immiscible with the ionic liquid and is also a non-solvent for cellulose, adding the second liquid to the ionic liquid so as to form a biphasic system (6) which comprises an ionic liquid phase essentially free of lignocellulose and a second liquid phase comprising lignin in solution and cellulose as a precipitate, separating the two phases and recovering (8) the precipitated cellulose from the separated second liquid phase. | ||
| 申请公布号 | US8999067(B2) | 申请公布日期 | 2015.04.07 |
| 申请号 | US200812526474 | 申请日期 | 2008.02.07 |
| 申请人 | Queensland University of Technology | 发明人 | Edye Leslie Alan;Doherty William Orlando Sinclair |
| 分类号 | C08B1/00;C12P19/02;C12P7/10;C12P19/04;C13K1/02;D21C11/00;D21C5/00 | 主分类号 | C08B1/00 |
| 代理机构 | Dentons US LLP | 代理人 | Dentons US LLP |
| 主权项 | 1. A method for fractionating a lignocellulosic material, the method comprising: contacting the lignocellulosic material with an ionic liquid and dissolving the lignocellulosic material therein; providing a second liquid which is immiscible with the ionic liquid and is also a non-solvent for cellulose, wherein the second liquid is an aqueous hydroxide solution; adding the second liquid to the ionic liquid so as to form a biphasic system which comprises an ionic liquid phase essentially free of lignocellulose and a second liquid phase comprising lignin in solution and cellulose as a precipitate; separating the two phases; recovering the precipitated cellulose from the separated second liquid phase; decreasing the pH of the separated second liquid phase until the lignin precipitates therefrom; and recovering the precipitated lignin. | ||
| 地址 | Brisbane, Queensland AU | ||