公开(公告)号：US10974233B2

公开(公告)日：2021-04-13

申请号：US16489599

申请日：2017-03-27

Applicant: WANHUA CHEMICAL GROUP CO., LTD.

Inventor： Jianglin Hu ,  Yunhai Liu ,  Yuan Li ,  Qingmei Jiang ,  Yanfang Song ,  Yang Yang ,  Changsheng Chen ,  Ke Ding ,  Wei Zeng ,  Hengdong Yang ,  Kun Wang ,  Weiqi Hua

IPC: B01J31/06 ,  C07C29/132 ,  B01J23/14 ,  B01J23/20 ,  B01J23/22 ,  B01J23/28 ,  B01J23/30 ,  B01J23/34 ,  B01J23/36 ,  B01J23/42 ,  B01J23/44 ,  B01J23/46 ,  B01J23/52 ,  B01J31/16 ,  B01J23/652 ,  B01J31/18 ,  B01J23/648 ,  B01J23/656 ,  B01J37/02 ,  B01J23/62

Abstract: The present invention provides a method for preparing 1,5-pentanediol via hydrogenolysis of tetrahydrofurfuryl alcohol. The catalyst used in the method is prepared by supporting a noble metal and a promoter on an organic polymer supporter or an inorganic hybrid material supporter, wherein the supporter is functionalized by a nitrogen-containing ligand. When the catalyst is used in the hydrogenolysis of tetrahydrofurfuryl alcohol to prepare 1,5-pentanediol, a good reaction activity and a high selectivity can be achieved. The promoter and the nitrogen-containing ligand in the supporter are bound to the catalyst through coordination, thereby the loss of the promoter is significantly decreased, and the catalyst has a particularly high stability. The lifetime investigation of the catalyst, which has been reused many times or used continuously for a long term, suggests that the catalyst has no obvious change in performance, thus reducing the overall process production cost.

公开(公告)号：US10898883B2

公开(公告)日：2021-01-26

申请号：US16622480

申请日：2017-08-02

Applicant: WANHUA CHEMICAL GROUP CO., LTD.

Inventor： Jianglin Hu ,  Yunhai Liu ,  Xinjian Bian ,  Yuan Li ,  Qingmei Jiang ,  Changsheng Chen ,  Yanfang Song ,  Yang Yang ,  Wei Zeng ,  Ke Ding ,  Hengdong Yang ,  Kun Wang ,  Weiqi Hua

IPC: B01J29/035 ,  B01J35/00 ,  C07C31/20 ,  B01J23/42 ,  B01J23/52 ,  B01J35/02 ,  C07C29/141

Abstract: An organic-base functionalized silicalite-1 molecular sieve-encapsulated metal nanoparticles catalyst and a preparation method therefor, as well as a method for preparing 1,2-pentanediol from biomass-derived furfuryl alcohol by hydrogenolysis using said catalyst. When the catalyst is used in a reaction preparing 1,2-pentanediol from furfuryl alcohol by hydrogenolysis, the catalyst has high hydrogenolysis activity under relatively mild reaction conditions, significantly increasing the conversion rate of furfuryl alcohol and 1,2-pentanediol selectivity in the reaction, while also not generating obvious byproducts furfuryl alcohol polymers; the catalyst has good stability and long life, and may be recovered for reuse after the reaction is complete by means of a simple filtration, greatly reducing reaction costs and separation difficulty.