Patents Assigned to ChemCat Corporation
  • Publication number: 20240359169
    Abstract: The present invention provides an organic metal complex catalyst for an olefin metathesis reaction, which enables the achievement of a higher yield of a desired substance in an olefin metathesis reaction than the conventional catalysts. The organic metal complex catalyst according to the present invention has a structure represented by formula (1) and is used for an olefin metathesis reaction. In formula (1), M represents a coordination center and is an Ru atom or an ion thereof; R1, R2 and R3 may be the same as or different from each other and independently represent a substituent such as a hydrogen atom; R4, R5, R6 and R7 may be the same as or different from one another and independently represent a substituent such as a hydrogen atom; X represents a halogen atom; and R8 represents a substituent having 3 to 20 carbon atoms and having a ? bond.
    Type: Application
    Filed: September 16, 2022
    Publication date: October 31, 2024
    Applicants: N.E. CHEMCAT CORPORATION, NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Junchul Choi, Norihisa Fukaya, Kazuhiro Matsumoto, Tomoteru Mizusaki, Yukio Takagi, Yasuhiro Seki
  • Patent number: 12110296
    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.
    Type: Grant
    Filed: October 7, 2019
    Date of Patent: October 8, 2024
    Assignees: N.E. CHEMCAT CORPORATION, OSAKA UNIVERSITY
    Inventors: Kiyotomi Kaneda, Takato Mitsudome, Yoshiyuki Wada, Yukio Takagi
  • Patent number: 12017208
    Abstract: It is an object of the present invention to provide a catalyst for a cross-coupling reaction in which an organometallic complex is sufficiently immobilized on a carrier and an object product can be easily obtained in a high yield and in a relatively short reaction time with a relatively small amount of use. The catalyst for a cross-coupling reaction of the present invention has a carrier part composed of a synthetic resin and an organometallic complex part immobilized on the carrier part by chemical bonding, and has a structure represented by formula (P1), wherein in (P1) R1, R2 may be the same or different, and is a substituent such as a hydrogen atom. R3, R4, R5, R6, R8, R9 may be the same or different and are substituents, such as a hydrogen. X represents a halogen atom, and R7 represents a substituent having 3 to 20 carbon atoms with a ? bond. RS1 represents the main chain of the synthetic resin precursors having —CH2OH group at their end.
    Type: Grant
    Filed: August 28, 2019
    Date of Patent: June 25, 2024
    Assignees: N.E. CHEMCAT CORPORATION, NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Tomoteru Mizusaki, Yukio Takagi, Junchul Choi, Norihisa Fukaya, Kazuhiro Matsumoto
  • Publication number: 20240115998
    Abstract: It is an object of the present invention to provide an exhaust gas purifying catalyst filter which has enhanced soot collection performance without increasing pressure loss caused by the formation of a catalyst layer in a partition wall of a wall flow type substrate. A gasoline engine exhaust gas purifying catalyst filter for purifying exhaust gas of a gasoline engine includes: a wall flow type substrate in which an introduction-side cell having an open exhaust gas introduction-side end, and a discharge-side cell adjacent to the introduction-side cell and having an open exhaust gas discharge-side end are defined by a porous partition wall; and a catalyst layer formed in a pore of the partition wall. An absolute value of a maldistribution degree of the catalyst layer formed in the pore of the partition wall is 4.50 or less. A wash coat amount, excluding a mass of a platinum group, of the catalyst layer formed in the pore of the partition wall, is 40 g/L or more and 50 g/L or less.
    Type: Application
    Filed: January 26, 2022
    Publication date: April 11, 2024
    Applicants: HONDA MOTOR CO., LTD., N.E. CHEMCAT CORPORATION
    Inventors: Takeshi MORI, Shinichiro OTSUKA, Yoshiaki HATAKEYAMA, Mahiro SHIROTORI
  • Publication number: 20240120503
    Abstract: The method of producing an electrode catalyst having a porous carbon support that has nanopores having a pore diameter of 1 to 20 nm and a BET specific surface area of 700 to 900 m2/g, and catalyst particles containing Pt supported on the support, includes: a first step for preparing a powder in which the catalyst particles are supported on the support; and a second step for accommodating the powder obtained through the first step in a flow-type reactor, flowing NH3 gas through the reactor under conditions of a concentration of 10 to 100% and a pressure of 0.1 MPa to 0.5 MPa, and regulating the temperature in the reactor to 500° C. or more and less than the decomposition temperature of ammonia, keeping for 5 to 10 hours to chemically react the powder and the NH3 gas.
    Type: Application
    Filed: February 9, 2022
    Publication date: April 11, 2024
    Applicant: N.E. CHEMCAT CORPORATION
    Inventors: Kiyotaka Nagamori, Tomoteru Mizusaki, Satoshi Aoki, Yoko Nakamura, Yasuhiro Seki
  • Publication number: 20240105965
    Abstract: The method produces an electrode catalyst having a porous carbon support that has nanopores having a pore diameter of 1 to 20 nm, micropores having a pore diameter of less than 1 nm, and a BET specific surface area of 1000 to 1500 m2/g, and catalyst particles containing Pt supported on the support, including: preparing a powder in which the catalyst particles are supported on the support by using the support and raw materials of the catalyst particle; and accommodating the powder obtained through the first step in a flow-type reactor, flowing ammonia gas through the reactor under conditions of a concentration of 10 to 100% and a pressure of 0.1 MPa to 0.5 MPa, and regulating the temperature in the reactor to 500° C. or more and less than the decomposition temperature of ammonia, keeping for 5 to 10 hours to chemically react the powder and the ammonia gas.
    Type: Application
    Filed: February 9, 2022
    Publication date: March 28, 2024
    Applicant: N.E. CHEMCAT CORPORATION
    Inventors: Kiyotaka Nagamori, Tomoteru Mizusaki, Satoshi Aoki, Yoko Nakamura, Yasuhiro Seki
  • Publication number: 20230369608
    Abstract: The catalyst for electrodes comprises: a porous support which has nanopores having a pore diameter of from 1 nm to 20 nm and micropores having a pore diameter of less than 1 nm; and a plurality of catalyst particles which are supported by the support. The catalyst particles are supported by both inner portions and outer portions of mesopores of the support, and contain Pt (zerovalent). 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 condition of formula (S1), namely (100×(N10/N20)?8.0) is satisfied, where N10 represents the number of noble metal particles that are not in contact with pores having a pore diameter of 1 nm or more; and N20 represents the number of catalyst particles that are supported by the inner portions of the nanopores of the support.
    Type: Application
    Filed: September 28, 2021
    Publication date: November 16, 2023
    Applicant: N.E. CHEMCAT CORPORATION
    Inventors: Yasuhiro Seki, Kiyotaka Nagamori, Tomoteru Mizusaki, Satoshi Aoki, Yoko Nakamura, Makoto Nishibetto, Yuki Takii
  • Publication number: 20230335760
    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.
    Type: Application
    Filed: September 28, 2021
    Publication date: October 19, 2023
    Applicant: N.E. CHEMCAT CORPORATION
    Inventors: Yasuhiro Seki, Tomoteru Mizusaki, Kiyotaka Nagamori, Satoshi Aoki, Makoto Nishibetto, Yoshiyuki Wada, Yoko Nakamura
  • Patent number: 11724249
    Abstract: Provided are a high-performance Cu—P co-supported zeolite and the like having excellent thermal endurance and catalyst performance. A Cu—P co-supported zeolite comprising at least a small pore size zeolite, and an extra-backbone copper atom and an extra-backbone phosphorus atom supported on the small pore size zeolite, wherein a silica-alumina ratio (SiO2/Al2O3) is 7 or more and 20 or less, a ratio of the copper atom to a T atom (Cu/T) is 0.005 or more and 0.060 or less, a ratio of the phosphorus atom to the T atom (P/T) is 0.005 or more and 0.060 or less, and a ratio of the phosphorus atom to the copper atom (P/Cu) is 0.1 or more and 3 or less.
    Type: Grant
    Filed: October 16, 2019
    Date of Patent: August 15, 2023
    Assignee: N.E. CHEMCAT CORPORATION
    Inventors: Yukio Takagi, Kiyohiko Saito, Yasuyuki Banno, Makoto Nagata
  • Publication number: 20230231148
    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.
    Type: Application
    Filed: March 16, 2021
    Publication date: July 20, 2023
    Applicant: N.E. CHEMCAT CORPORATION
    Inventors: Yoshiyuki Wada, Tomoteru Mizusaki, Kiyotaka Nagamori, Satoshi Aoki, Makoto Nishibetto, Yasuhiro Seki
  • Publication number: 20230219822
    Abstract: A small-pore zeolite that is modified with phosphorus, is excellent in hydrothermal durability, and has an 8-membered oxygen ring structure. The 8-membered oxygen ring structure is CHA, AEI, and AFX. The small-pore zeolite incudes at least an aluminum element, a silica element, a phosphorus element, wherein the phosphorus element is defined by expression (1), and the small-pore zeolite has an 8-membered oxygen ring structure being of CHA, AEI, or AFX. The phosphorus element that modifies the zeolite is unevenly distributed and richly contained on the surface layer side of the zeolite. A method for producing a phosphorus element-containing zeolite.
    Type: Application
    Filed: April 6, 2021
    Publication date: July 13, 2023
    Applicant: N.E. CHEMCAT CORPORATION
    Inventors: Yukio TAKAGI, Yasuyuki BANNO, Kiyohiko SAITO, Hiroyasu SUZUKA, Yosuke IMANAKA, Takahiko ISHIKAWA
  • Publication number: 20230216063
    Abstract: A washing device includes executors for executing a normal washing step and a reverse washing step before executing a plate opening step and a cake peeling step. The normal washing step is a step for supplying a washing water to a filter chamber, allowing the washing water to pass through a cake, and then discharging the washing water from filtrate discharge outlets. The reverse washing step is a step for supplying a washing water from the filtrate discharge outlet(s) to the filter chamber, allowing the washing water to pass through the cake, and then discharging the washing water from the filtrate discharge outlet(s) which are different from the filtrate discharge outlet(s) from which the washing water is supplied. The thickness of the electrode catalyst precursor-containing cake at the time of the injection step is adjusted to that of a range that has been previously and experimentally determined.
    Type: Application
    Filed: March 23, 2021
    Publication date: July 6, 2023
    Applicant: N.E. CHEMCAT CORPORATION
    Inventors: Yasuhiro SEKI, Akinobu TAKENOYA, Makoto NISHIBETTOU, Kiyotaka NAGAMORI, Hiroshi IGARASHI
  • Patent number: 11686231
    Abstract: Provided are an LNT layered catalyst for a lean burn gasoline engine having an enhanced NOx storage rate and capable of developing a higher NOx purification rate, and an exhaust gas purification apparatus using the same, the LNT layered catalyst including a substrate, a first catalyst layer including ceria-alumina particles carrying Pt, Pd, and BaO, and a second catalyst layer including ceria-alumina particles carrying Pt and Rh, in which a content of Pt in the first catalyst layer is 0.45 to 0.85 mass %; among Pt included in the first catalyst layer, a content proportion in a first depth region is 88 to 90 mass %, and a content proportion in a second depth region is 10 to 12 mass %; a content of Ba in the first catalyst layer is 4 to 11 mass %; and the second catalyst layer is substantially free from Ba.
    Type: Grant
    Filed: February 17, 2021
    Date of Patent: June 27, 2023
    Assignees: N.E. CHEMCAT Corporation, SUBARU CORPORATION
    Inventors: Yasuyoshi Sasaki, Isao Tan, Shunsuke Fukutomi, Takehiro Fujimura, Shuya Omata
  • Publication number: 20230126404
    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).
    Type: Application
    Filed: March 16, 2021
    Publication date: April 27, 2023
    Applicant: N.E. CHEMCAT CORPORATION
    Inventors: Yoshiyuki Wada, Tomoteru Mizusaki, Kiyotaka Nagamori, Satoshi Aoki, Hiroki Shiina, Yasuhiro Seki
  • Publication number: 20230079500
    Abstract: Provided are an electrode catalyst production system and production method omitting transferring an electrode catalyst precursor, and shortening a drying time thereof. The system has an electrode catalyst precursor production device, a washing device and a drying device. The drying device includes executors for executing: an introduction step for introducing an electrode catalyst precursor into a container main body; a drying processing step for drying the precursor by heating and depressurizing the container main body, and stirring and mixing the precursor with a stirring blade; a cooling step for cooling the precursor by cooling and depressurizing the container main body, and stirring and mixing the precursor with the stirring blade; a slow oxidation step for performing a slow oxidation treatment on the precursor by supplying air to the container main body; and a retrieving step for retrieving the precursor inside the container main body.
    Type: Application
    Filed: March 23, 2021
    Publication date: March 16, 2023
    Applicant: N.E. Chemcat Corporation
    Inventors: Makoto NISHIBETTOU, Yasuhiro SEKI, Akinobu TAKENOYA, Kiyotaka NAGAMORI, Hiroshi IGARASHI, Hiroki SHIINA, Mie TAMURA
  • Patent number: 11484864
    Abstract: Provided is, for example, an exhaust gas-purifying three-way catalyst which is suppressed in particle growth due to sintering of a catalytically active component on a carrier in exposure to a high temperature and thus is enhanced in purification performance, and a method for producing the same, as well as an integral structure type exhaust gas-purifying catalyst using the same. The exhaust gas-purifying three-way catalyst of the present invention includes a composite particle which contains a base material particle having a pore size of 100 to 650 nm as measured by a mercury intrusion method and a catalytically active particle of a platinum group element supported on the base material particle, in which a content proportion of the catalytically active particle is 0.001 to 30% by mass in total in terms of metal of the platinum group element, based on a total amount of the composite particle.
    Type: Grant
    Filed: January 28, 2019
    Date of Patent: November 1, 2022
    Assignee: N.E. CHEMCAT Corporation
    Inventors: Hiroyuki Hara, Yuki Toya, Hiroki Nakayama, Takumi Nakamura
  • Publication number: 20220213110
    Abstract: The present invention provides, for example, a compound represented by formula (1), or a salt thereof: wherein R1 to R4 are each independently an alkyl group.
    Type: Application
    Filed: May 8, 2020
    Publication date: July 7, 2022
    Applicants: OSAKA UNIVERSITY, N.E. CHEMCAT Corporation
    Inventors: Takato MITSUDOME, Yukio TAKAGI, Kiyohiko SAITO, Hiroyasu SUZUKA, Yosuke IMANAKA, Yasuyuki BANNO
  • Patent number: 11376568
    Abstract: Provided is, for example, an exhaust gas-purifying three-way catalyst which is small in the amount of a platinum group element used, which can be early increased in temperature to a catalytically active temperature, which is suppressed in degradation in performance due to a catalyst poison included in an exhaust gas even if placed directly under an engine, and which is excellent in purification performance.
    Type: Grant
    Filed: January 28, 2019
    Date of Patent: July 5, 2022
    Assignee: N.E. CHEMCAT Corporation
    Inventors: Toshinori Onuki, Yoshinori Takahashi
  • Patent number: 11351524
    Abstract: It is intended to provide a novel zeolite with a rare earth element-substituted framework which has a higher amount of NOx adsorbed and a method for producing the same, and a NOx adsorption member and a catalyst for automobile exhaust gas, etc. comprising the same. The present invention provides a zeolite with a rare earth element-substituted framework, comprising at least a zeolite and at least one rare earth element selected from the group consisting of Ce, La, Nd and Pr, wherein a content ratio of the rare earth element is 1 to 15% by mass in total based on the total amount, and one or some of Al and/or Si atoms constituting the framework of the zeolite are replaced with the rare earth element.
    Type: Grant
    Filed: October 1, 2018
    Date of Patent: June 7, 2022
    Assignee: N.E. CHEMCAT Corporation
    Inventor: Yasuyuki Banno
  • Publication number: 20220154620
    Abstract: Provided are a selective reducing catalyst for diesels and a diesel exhaust gas purification apparatus in which deterioration of NOx removal performance due to phosphorus poisoning is less likely to occur.
    Type: Application
    Filed: March 25, 2020
    Publication date: May 19, 2022
    Applicant: N.E. CHEMCAT CORPORATION
    Inventors: Kazunori KUMAMOTO, Takashi HIHARA