公开(公告)号：US11918987B2

公开(公告)日：2024-03-05

申请号：US17291250

申请日：2020-01-14

申请人： Wanhua Chemical Group Co., Ltd.

发明人： Lei Wang ,  Tongji Wang ,  Fei Ye ,  Kang Sun ,  Naibo Chu ,  Qiankun Jiao ,  Yuan Li

IPC分类号： B01J37/00 ,  B01J21/06 ,  B01J21/08 ,  B01J23/28 ,  B01J35/10 ,  B01J37/08 ,  C07D301/14

CPC分类号： B01J37/0018 ,  B01J21/063 ,  B01J21/08 ,  B01J23/28 ,  B01J35/1023 ,  B01J35/1061 ,  B01J37/08 ,  C07D301/14 ,  B01J2523/31 ,  B01J2523/41 ,  B01J2523/47 ,  B01J2523/68

摘要： Provided are a preparation method for a propylene epoxidation catalyst, and a use thereof. During the preparation, an alkoxide solution of a prepared active component and a silica gel support are mixed, then a rotary evaporation treatment is performed on the mixture to remove a low-carbon alcohol to obtain a catalyst precursor, and then the obtained catalyst precursor is subjected to calcination and silylation treatments to obtain the propylene epoxidation catalyst. The catalyst is prepared in a simple process, can be applied to the chemical process of preparing propylene oxide by propylene epoxidation, has high average selectivity to propylene oxide, and has industrial application prospect.