公开(公告)号：US11987567B2

公开(公告)日：2024-05-21

申请号：US17899814

申请日：2022-08-31

申请人： Qingdao University of Science and Technology

发明人： Yingjie Zhao ,  Wenqi Qiu ,  Hui Liu ,  Zhenxiu Zhang ,  Jinyu Zhao

IPC分类号： C07D319/12 ,  B01J31/04 ,  B01J37/00 ,  B01J37/02 ,  B01J37/03 ,  B01J37/04 ,  B01J37/06

CPC分类号： C07D319/12 ,  B01J31/04 ,  B01J37/009 ,  B01J37/0236 ,  B01J37/031 ,  B01J37/04 ,  B01J37/06 ,  B01J2231/005 ,  B01J2531/002

摘要： The present invention discloses a synthesis method of lactide by confinement effect catalysis of crystalline porous polymer material, wherein the method comprising: (I) synthesis of catalyst; (II) synthesis of lactide by confinement effect catalysis; and (III) purification of lactide. In the present invention, a yield of L-lactide by catalysis of L-lactic acid by crystalline polymers is as high as 85.6%, which is 10% higher than the yield of lactide by H-β molecular sieve reported in documents currently available; it is easy to prepare the crystalline porous polymer material catalyst, which is environmental friendly, has a high yield and is recyclable, for consecutive 7 times the catalysis yield is maintained to be higher than 70%, and catalysis yield conservation rate is far higher than catalysis effects of catalysts reported in documents currently available.