公开(公告)号：US20220080400A1

公开(公告)日：2022-03-17

申请号：US17258439

申请日：2019-11-06

申请人： ZHEJIANG NHU COMPANY LTD. ,  ZHEJIANG UNIVERSITY ,  SHANDONG NHU PHARMACEUTICAL CO., LTD. ,  SHANDONG NHU VITAMIN CO., LTD.

发明人： Yong WANG ,  Zhe WANG ,  Yutong GONG ,  Lei WU ,  Lili YU ,  Haoran LI ,  Zhirong CHEN ,  Xiao MA ,  Jianyong MAO

IPC分类号： B01J31/22 ,  B01J37/04

摘要： A hydroformylation catalyst, a preparation method thereof and a use thereof. The hydroformylation catalyst including an active component and a carrier carrying the active component, wherein the active component includes a transition metal as a center atom, and a polyhydroxy aromatic ring group bonded to the transition metal; and the transition metal and the polyhydroxy aromatic ring groups are bonded by at least one of metal-hydroxyl coordination bond and at least one of metal-oxygen covalent bond, and the active component has at least one of the metal-hydroxyl coordination bond and at least one of the metal-oxygen covalent bond.

公开(公告)号：US20200070138A1

公开(公告)日：2020-03-05

申请号：US16669524

申请日：2019-10-31

申请人： ZHEJIANG NHU COMPANY LTD. ,  ZHEJIANG UNIVERSITY ,  SHANDONG NHU PHARMACEUTICAL CO., LTD. ,  SHANDONG NHU VITAMIN CO., LTD.

发明人： Yong WANG ,  Lili YU ,  Xiao MA ,  Jianyong MAO ,  Zhe WANG ,  Shanjun MAO ,  Jingsi TANG ,  Haoran LI ,  Zhirong CHEN

IPC分类号： B01J37/02 ,  B01J37/04 ,  B01J35/10 ,  C07D495/04 ,  C07C5/05 ,  B01J37/08 ,  B01J37/16 ,  B01J23/42 ,  B01J23/44 ,  B01J23/46

摘要： A composite catalyst includes a carrier and noble metal particles supported by the carrier, wherein the carrier is a nitrogen-doped porous carbon composite material having a plurality of passages. The nitrogen-doped porous carbon composite material can include a nitrogen-doped porous carbon material and a plurality of metal oxide particles. The plurality of metal oxide particles can be uniformly distributed in the nitrogen-doped porous carbon material. The plurality of metal oxide particles can be partially exposed through the plurality of passages. The noble metal particles can be tightly combined with the exposed metal oxide particles to achieve recombination. And the noble metal particles can be at least one of Pd metal particles, Pt metal particles, Ru metal particles, Rh metal particles, Ir metal particles, Au metal particles, or a combination thereof.

公开(公告)号：US20200070132A1

公开(公告)日：2020-03-05

申请号：US16558125

申请日：2019-09-01

申请人： ZHEJIANG NHU COMPANY LTD. ,  ZHEJIANG UNIVERSITY ,  SHANDONG NHU PHARMACEUTICAL CO., LTD. ,  SHANDONG NHU VITAMIN CO., LTD.

发明人： Yong WANG ,  Lili YU ,  Xiao MA ,  Jianyong MAO ,  Zhe WANG ,  Shanjun MAO ,  Jianqing LI ,  Gang CHEN ,  Haoran LI ,  Zhirong CHEN

IPC分类号： B01J27/24 ,  B01J35/00 ,  B01J37/18 ,  B01J37/08 ,  B01J37/00 ,  B01J37/03 ,  B01J23/62 ,  B01J35/10 ,  C07C29/17

摘要： The present disclosure provides a PdIn alloy catalyst including a carrier and Pd metal particles supported by the carrier, the carrier is a nitrogen-doped porous carbon composite material having a plurality of passages, Pd metal particles are distributed in the plurality of passages, the nitrogen-doped porous carbon composite material includes a nitrogen-doped porous carbon material, a plurality of indium oxide particles, and In metal particles. The In metal particles are exposed through the plurality of passages, the plurality of indium oxide particles are uniformly distributed in the nitrogen-doped porous carbon material, and In atoms of the In metal particles migrated to surfaces of Pd particles selectively occupy edge and corner positions of metal lattice of Pd metal particles. The present disclosure further provides a method for manufacturing the PdIn alloy catalyst and application thereof.

公开(公告)号：US20210252484A1

公开(公告)日：2021-08-19

申请号：US16919097

申请日：2020-07-01

申请人： ZHEJIANG UNIVERSITY ,  ZHEJIANG NHU COMPANY LTD. ,  SHANDONG NHU PHARMACEUTICAL CO., LTD.

发明人： Haoran LI ,  Yong WANG ,  Baishan HU ,  Xiao MA ,  Dan QIU ,  Qian LUO ,  Zhe WANG ,  Shanjun MAO ,  Lili YU ,  Qichuan LI

IPC分类号： B01J23/44 ,  B01J31/18 ,  B01J31/02 ,  B01J37/02 ,  C07C29/157

摘要： The present invention discloses a selective hydrogenation catalyst and a preparation method and an application thereof, belonging to the technical field of catalysts. The selective hydrogenation catalyst comprises an active component and a carrier for supporting the active component, wherein the active component is a transition metal particle, the carrier is modified by a flexible chain ligand in advance, one end of the flexible chain ligand is uniformly distributed on the surface of the carrier, and the other end of the flexible chain ligand is coordinated on a transition metal. When the catalyst is used for catalytic hydrogenation reaction of dehydrolinalool or 2-methyl-3-butyn-2-ol, the stability is good, the catalyst still has high selectivity after being used for a long time, and the quality of a hydrogenation product can be guaranteed.

公开(公告)号：US20210087133A1

公开(公告)日：2021-03-25

申请号：US16954774

申请日：2018-11-30

申请人： Zhejiang Nhu Company Ltd. ,  Zhejiang University ,  Shandong Nhu Amino Acid Co., Ltd. ,  Shandong Nhu Fine Chemical Science and Technology Company Ltd.

发明人： Zhirong CHEN ,  Jianyong MAO ,  Baishan HU ,  Guanbing LI ,  Haoran LI ,  Yu WANG ,  Yingkuo YANG ,  Qing LIU ,  Jiyu TANG ,  Weiyong CHEN

IPC分类号： C07C209/52 ,  C07C209/48 ,  B01J23/78 ,  B01J35/04

摘要： The present disclosure relates to a method for preparing isophorone diamine by means of a hydrogenation reduction of isophorone nitrile imine. The hydrogenation reduction is continuously carried out in a multi-stage bubble column reactor loaded with a supported alkaline cobalt-based catalyst, wherein isophorone nitrile imine is successively in countercurrent contact with hydrogen in each stage of the reactor to carry out a hydrogenation reduction reaction, so as to obtain the isophorone diamine. The preparation method solves the problem of back-mixing, and further improves the conversion rate and the cis/trans ratio of the product.

公开(公告)号：US20210009514A1

公开(公告)日：2021-01-14

申请号：US16955511

申请日：2018-07-12

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

发明人： Zhirong CHEN ,  Woyuan LI ,  Hong YIN ,  Guíyang ZHOU ,  Haoran LI ,  Shuaifeng PAN ,  Ming LIAN ,  Guangde QIN ,  Qichuan LI

IPC分类号： C07C319/06

摘要： The present disclosure discloses a preparation method for 4-phenylthio-benzenethiol. The preparation method comprises the following steps: subjecting phenyl sulfide as a raw material to a halogenation reaction to obtain 4-halophenyl sulfide; subjecting the 4-halophenyl sulfide to a sulfhydrylation reaction to obtain a 4-phenylthio-phenylthiolate; and subjecting the 4-phenylthio-phenylthiolate to acidification. The preparation method of the present disclosure avoids the use of materials such as thiophenol which pollutes the environment, and realizes efficient recycling of the reaction materials, solvents, water and the like. The preparation method of the present disclosure is a green process for the synthesis of 4-phenylthio-phenylthiol without organic waste, waste acid and waste water discharge.