专利名称 | Method for completely dissolving and rapidly hydrolyzing cellulose, and uses of said method | 申请号 | US201013259526 | 专利类型 | US | 公开(公告)号 | US9115215(B2) | 公开(授权)日 | 2015.08.25 | 申请(专利权)人 | 中国科学院西双版纳热带植物园 | 发明(设计)人 | Fang Zhen | 主分类号 | C08B1/00 | IPC主分类号 | C08B1/00;C08B15/02;C08L1/02 | 专利有效期 | Method for completely dissolving and rapidly hydrolyzing cellulose, and uses of said method 至Method for completely dissolving and rapidly hydrolyzing cellulose, and uses of said method | 法律状态 | 说明书摘要 | The invention discloses a method for completely dissolving and rapidly hydrolyzing cellulose, and uses thereof. Cellulose is placed in an acidic aqueous solution with a [H+] concentration of 10?7?1 M or an alkaline aqueous solution with a [OH?] concentration of 10?7?1 M as sample A, wherein the volume ratio of solid to liquid is (0.003?1.05):1. The acidic aqueous solution with a [H+] concentration of 10?7?1 M or the alkaline aqueous solution with a [OH?] concentration of 10?7?1 M is heated up to 261?352 as sample B. Sample A and sample B obtained from step 1 and step 2 are mixed in a reactor to a concentration of cellulose of 0.1%?35%, the concentration of the mixed solution is adjusted to an acidity of 10?7?1 M [H+] or an alkalinity of 10?7?1 M [OH?], and a water density of 587?997 kg/m3, pressure is set at 6?584 MPa. The mixture is rapidly heated up to 261?352 at heating rate of 7.8?14.8 /s, and then cellulose is dissolved completely in 0.8?2 sec and hydrolyzed in 5 sec. Using this technique, it is the first time for achieving complete dissolution and rapid hydrolysis of cellulose at a lower temperature, which not only dramatically reduces the cost of hydrolysis but also improves the safety of production and extends the service life of equipment, thus possessing a good application prospect. |
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