专利检索 ap:("ZHEJIANG UNIVERSITY" OR "ZHEJIANG NHU CO., LTD." OR "ZHEJIANG NHU SPECIAL MATERIALS CO., LTD." OR "ZHEJIANG NHU NYLON MATERIALS CO., LTD.") AND inv:"Li Ma" 第 1 页

1.

发明公开
Use of a Multidentate Phosphite Ligand in the Catalytic Synthesis of Adiponitrile 审中-公开

公开(公告)号：US20240336560A1

公开(公告)日：2024-10-10

申请号：US17800452

申请日：2022-06-21

申请人： ZHEJIANG UNIVERSITY , ZHEJIANG NHU CO., LTD. , ZHEJIANG NHU SPECIAL MATERIALS CO., LTD. , ZHEJIANG NHU NYLON MATERIALS CO., LTD.

发明人： Zhirong Chen , Wenbin Wu , Hong Yin , Zengshi Zha , Keyan Wang , Li Ma , Guodong Huang , Guiyang Zhou , Yong Xu

IPC分类号： C07C253/10 , B01J31/18 , B01J37/04 , C07F9/06 , C07F9/6571

CPC分类号： C07C253/10 , B01J31/185 , B01J37/04 , C07F9/062 , C07F9/6571 , B01J2231/322 , B01J2231/52 , B01J2531/004 , B01J2531/847

摘要： A multidentate phosphite ligand is used in the catalytic synthesis of adiponitrile. The ligand is represented by the following general formula (I). The method of catalytic synthesis of adiponitrile comprises primary hydrocyanation, isomerization, and secondary hydrocyanation reactions, wherein the catalyst adopted each comprises a phosphite ligand-nickel complex composed of a nickel precursor and a multidentate phosphite ligand. The ligand molecule has a higher electron cloud density, and the phosphorus content capable of participating in coordination in the ligand molecule per unit mass is higher, so that the catalytic activity of the catalyst is improved, and the amount of the catalyst is reduced.