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.

公开(公告)号：US20230094350A1

公开(公告)日：2023-03-30

申请号：US17795838

申请日：2021-09-16

申请人： ZHEJIANG UNIVERSITY ,  ZHEJIANG NHU CO., LTD. ,  SHANDONG NHU AMINO ACID CO., LTD. ,  ZHEJIANG NHU SPECIAL MATERIALS CO., LTD.

发明人： Zhirong Chen ,  Wenbin Wu ,  Hong Yin ,  Yaqing Liu ,  Zengshi Zha ,  Zhichao Feng ,  Tinglan Zhang ,  Guodong Huang

IPC分类号： B01J31/06 ,  C08F30/02 ,  C08J9/14 ,  B01J23/755 ,  B01J31/28 ,  B01J35/10 ,  B01J35/00 ,  C07C253/10

摘要： A porous polymer has a pore volume of 0.3 to 2.5 cm3/g and comprises a pore having a first pore diameter and a pore having a second pore diameter. A ratio of pore volume of the pore having a first pore diameter to pore volume of the pore having a second pore diameter is 1 to 10:1. The porous polymer is obtained by self-polymerization or copolymerization of at least one of the phosphorus ligands, and phosphorous content of the porous polymer is 1 to 5 mmol/g. The porous polymer-nickel catalyst made of the porous polymer has a significant increase in water resistance, which may reduce the consumption of phosphorus ligands, eliminating the steps of removing water from raw materials and reaction system water control, which greatly saves process equipment investment. When used in the preparation of adiponitrile from butadiene, it has high catalytic activity, high reaction selectivity, and high linearity.