公开(公告)号：US08574368B2

公开(公告)日：2013-11-05

申请号：US12676831

申请日：2008-09-03

申请人： John Holbrey ,  Markus Fanselow ,  Kenneth Richard Seddon ,  Lauret Vanoye ,  Anna Zheng

发明人： John Holbrey ,  Markus Fanselow ,  Kenneth Richard Seddon ,  Lauret Vanoye ,  Anna Zheng

IPC分类号： C13K1/02

CPC分类号： C12P7/10 ,  C07H3/02 ,  C08B1/003 ,  C08B15/02 ,  Y02E50/16 ,  Y02E50/17

摘要： A process is described for the preparation of water-soluble cellulose hydrolysis products, which comprises admixing cellulose with an ionic liquid capable of solvating or dissolving at least some of the cellulose, said ionic liquid being a compound comprised solely of cations and anions and which exists in a liquid state at a temperature at or below 150° C., the cations in said ionic liquid having the general formula (I), in which Z represents a nitrogen or phosphorus atom, R1 represents a methyl or ethyl group, each of R2 and R3, which may be the same or different, is selected from C4-3alkyl, optionally-substituted benzyl, optionally-substituted phenyl, and C5-7 cycloalkyl, and R4 represents C1-8 alkyl, optionally-substituted benzyl, optionally-substituted phenyl or C5-7cyclohexyl; in which the optional substituents on a benzyl or phenyl ring are one, two or three substituents selected from C1-4alkyl or alkoxy groups, halogen atoms and nitro groups; and treating the resulting solvate or solution with an acid in the presence of water, said acid having a pKa in water of less than 2 at 25° C.

摘要翻译： 描述了用于制备水溶性纤维素水解产物的方法，其包括将纤维素与能够溶解或溶解至少一些纤维素的离子液体混合，所述离子液体是仅由阳离子和阴离子组成的化合物，并且存在 在等温或低于150℃的液态下，具有通式（I）的所述离子液体中的阳离子，其中Z表示氮或磷原子，R1表示甲基或乙基，R2各自表示 和可以相同或不同的R 3选自C 4-3烷基，任选取代的苄基，任选取代的苯基和C 5-7环烷​​基，R 4表示C 1-8烷基，任选取代的苄基，任选取代的 苯基或C 5-7环己基; 其中苄基或苯环上的任选取代基是选自C 1-4烷基或烷氧基，卤素原子和硝基的一个，两个或三个取代基; 并在酸存在下用酸处理得到的溶剂合物或溶液，所述酸在25℃下的水中pKa小于2。