专利详情

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.