公开(公告)号：US12110296B2

公开(公告)日：2024-10-08

申请号：US17283385

申请日：2019-10-07

Applicant: N.E. CHEMCAT CORPORATION ,  OSAKA UNIVERSITY

Inventor： Kiyotomi Kaneda ,  Takato Mitsudome ,  Yoshiyuki Wada ,  Yukio Takagi

IPC: C07D487/08 ,  B01J6/00 ,  B01J23/648 ,  B01J23/652 ,  B01J27/18 ,  B01J37/00 ,  B01J37/04

CPC classification number: C07D487/08 ,  B01J6/001 ,  B01J23/6482 ,  B01J23/6525 ,  B01J27/1806 ,  B01J37/0036 ,  B01J37/04

Abstract: The present invention provides a method for producing a compound represented by formula (2), comprising at least a step of preparing a compound represented by formula (1) and a step of reacting the compound represented by formula (1) with a hydrogen source using a catalyst,




wherein R1 and R2 are each independently an alkyl group.

公开(公告)号：US20200299239A1

公开(公告)日：2020-09-24

申请号：US16084063

申请日：2017-02-15

Applicant: N.E. CHEMCAT CORPORATION

Inventor： Hiroyasu Suzuka ,  Tomoteru Mizusaki ,  Yusuke Nakaya ,  Yoshiyuki Wada ,  Yukio Takagi

IPC: C07D213/73 ,  B01J23/89 ,  B01J21/18 ,  B01J35/10 ,  B01J35/02

Abstract: An aromatic nitro compound has a structure in which a nitro group and a halogen atom, in a separated state, are directly bonded as substituents to the ring structure of the same ring; a reaction composition is provided which, in a hydrogenation reaction of the nitro group of said aromatic nitro compound, allows selectively hydrogenating the nitro group, and sufficiently reducing the separation of the halogen atom from the ring; also provided is a reaction system that uses this reaction composition. This reaction composition includes a catalyst which, with the aforementioned aromatic nitro compound as reactant, is used in a hydrogenation reaction of at least one of the one or more nitro groups of said reactant. Further, the reaction composition includes a base and an organic solvent. The catalyst includes a carrier, and Fe oxide particles and Pt particles supported by the carrier.

公开(公告)号：US20230335760A1

公开(公告)日：2023-10-19

申请号：US18026553

申请日：2021-09-28

Applicant: N.E. CHEMCAT CORPORATION

Inventor： Yasuhiro Seki ,  Tomoteru Mizusaki ,  Kiyotaka Nagamori ,  Satoshi Aoki ,  Makoto Nishibetto ,  Yoshiyuki Wada ,  Yoko Nakamura

IPC: H01M4/92 ,  H01M4/86 ,  H01M8/1004

CPC classification number: H01M4/926 ,  H01M4/8605 ,  H01M4/921 ,  H01M8/1004

Abstract: This catalyst for electrodes comprises: a porous carbon support which has nanopores having a pore diameter of from 1 nm to 20 nm; and a plurality of catalyst particles which are supported by the support. The catalyst particles contain Pt (zerovalent), and are supported by both inner portions and outer portions of the nanopores of the support. If an analysis of the particle size distribution of the catalyst particles is performed using three-dimensional reconstructed images obtained through a STEM-based electron tomography measurement, the proportion of the catalyst particles supported by the inner portions of the nanoparticles is 50% or more: at least one nanopore is formed in a cubic image having a side of from 20 nm to 50 nm, said cubic image being obtained from a three-dimensional reconstructed image of a catalyst aggregate; and this nanopore has the shape of a continuously extending interconnected pore.

公开(公告)号：US20230126404A1

公开(公告)日：2023-04-27

申请号：US17910153

申请日：2021-03-16

Applicant: N.E. CHEMCAT CORPORATION

Inventor： Yoshiyuki Wada ,  Tomoteru Mizusaki ,  Kiyotaka Nagamori ,  Satoshi Aoki ,  Hiroki Shiina ,  Yasuhiro Seki

IPC: H01M4/92 ,  H01M8/1004 ,  H01M4/86

Abstract: The present invention provides an electrode catalyst which has excellent catalytic activity, and which can contribute to reducing the cost of a polymer electrolyte fuel cell (PEFC). According to the present invention, an electrode catalyst includes a hollow carrier including nanopores having a pore size of 1 to 20 nm, and a plurality of catalyst particles. The catalyst particles are supported both inside and outside the nanopores of the carrier, and comprise (zero-valent) Pt, and when a particle size distribution analysis of the catalyst particles is carried out using a three-dimensional reconstructed image obtained by electron beam tomography measurement employing STEM, the conditions of formula (S1): 100×(N10/N20)≤8.0 are satisfied (in the formula, N10 is the number of noble metal particles not in contact with a pore having a pore size of 1 nm or more, and N20 is the number of catalyst particles supported inside the nanopores of the carrier).

公开(公告)号：US20200290024A1

公开(公告)日：2020-09-17

申请号：US16084043

申请日：2017-02-15

Applicant: N.E. CHEMCAT CORPORATION

Inventor： Tomoteru Mizusaki ,  Hiroyasu Suzuka ,  Yusuke Nakaya ,  Yoshiyuki Wada ,  Yukio Takagi

IPC: B01J23/89 ,  C07C209/36

Abstract: Provided is a catalyst mixture which, in a nitro group hydrogenation reaction of an aromatic nitro compound having a structure in which nitro groups and halogen atoms are directly bonded as substituents to a ring skeleton of the same ring while separated from each other, is capable of selectively hydrogenating the nitro groups and sufficiently reducing the removal of the halogen atoms from the ring. This catalyst mixture includes a catalyst which is used in a hydrogenation reaction of at least one among one or more nitro groups present in a reactant, which is an aromatic nitro compound having a structure in which one or more nitro groups and one or more halogen atoms are directly bonded as substituents to a ring skeleton of the same ring while separated from each other. This catalyst mixture further includes a base.

公开(公告)号：US20230231148A1

公开(公告)日：2023-07-20

申请号：US17910137

申请日：2021-03-16

Applicant: N.E. CHEMCAT CORPORATION

Inventor： Yoshiyuki Wada ,  Tomoteru Mizusaki ,  Kiyotaka Nagamori ,  Satoshi Aoki ,  Makoto Nishibetto ,  Yasuhiro Seki

IPC: H01M4/92 ,  H01M8/1004 ,  H01M8/2465

CPC classification number: H01M4/926 ,  H01M8/1004 ,  H01M8/2465 ,  H01M8/1018

Abstract: Provided is a catalyst for electrode that has excellent catalytic activity and that is capable of contributing toward lower PEFC costs. This catalyst for electrode includes: a hollow carbon support having nanopores with a pore diameter of 1 to 20 nm; and a plurality of catalyst particles supported on the support. The catalyst particles are supported both inside and outside the nanopores of the support, are composed of (zerovalent) Pt, and when analysis of the particle size distribution of the catalyst particles is performed using three-dimensional, reconstructed images obtained through STEM-based electron tomography measurement, the percentage of catalyst particles supported inside the nanopores is 50% or more.