Patents by Inventor Yoshimune Abe

Yoshimune Abe has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 12187676
    Abstract: A method for producing a catalyst for unsaturated carboxylic acid synthesis is proposed. The method includes: obtaining a dried product by drying and heat-treating a starting material mixed liquid in which supply source compounds of respective catalyst component elements are integrated; and forming a catalyst precursor by supporting powder to be supported on a carrier in the form of a particle aggregate. The powder to be supported is either the dried product or obtained from the dried product. The method further includes calcining the catalyst precursor to form the catalyst. The mass loss rate of the powder to be supported at 300° C. is less than 5 percent by mass, and the difference between the mass loss rate of the powder at 370° C. and the mass loss rate of the powder at 300° C. is not less than 1 percent by mass and not more than 6 percent by mass.
    Type: Grant
    Filed: March 27, 2020
    Date of Patent: January 7, 2025
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Yoshimune Abe, Nariyasu Kanuka, Shigeki Okada
  • Publication number: 20220347659
    Abstract: A method is described for producing a catalyst having a high raw material conversion rate and a high product selectivity, as well as an excellent yield of unsaturated carboxylic acid, the catalyst being used in a vapor-phase catalytic oxidation reaction for producing an unsaturated carboxylic acid such as acrylic acid or methacrolein from an unsaturated aldehyde such as acrolein or methacrolein. The method includes a molding process of molding a powder containing a catalyst component element to produce a catalyst precursor, where a sulfur-containing inorganic compound is added to the powder, and the powder is molded in the molding process.
    Type: Application
    Filed: July 7, 2022
    Publication date: November 3, 2022
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Yoshimune ABE, Nariyasu KANUKA, Shigeki OKADA, Souhei KOUNO
  • Publication number: 20220289658
    Abstract: A method for producing (meth)acrolein by vapor-phase catalytic oxidation of propylene or isobutylene in a multitubular reactor including a plurality of reaction tubes, the reaction tubes each including a reaction zone filled with a catalyst including molybdenum oxide and a cooling zone filled with an inert substance, wherein a temperature of a heat medium that flows outside the cooling zone is lower than a temperature of a heat medium that flows outside the reaction zone, and wherein the inert substance includes an inert substance having a major-axis length that is equal to or more than 1.7 times a major-axis length of the catalyst. A method for producing (meth)acrylic acid in which (meth)acrolein thus produced is converted to (meth)acrylic acid by vapor-phase catalytic oxidation.
    Type: Application
    Filed: June 2, 2022
    Publication date: September 15, 2022
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Yasushi OGAWA, Yoshimune ABE, Takuya NAKAMURA
  • Publication number: 20220177401
    Abstract: A method for producing a catalyst for unsaturated carboxylic acid synthesis is proposed. The method includes: obtaining a dried product by drying and heat-treating a starting material mixed liquid in which supply source compounds of respective catalyst component elements are integrated; and forming a catalyst precursor by supporting powder to be supported on a carrier in the form of a particle aggregate. The powder to be supported is either the dried product or obtained from the dried product. The method further includes calcining the catalyst precursor to form the catalyst. The mass loss rate of the powder to be supported at 300° C. is less than 5 percent by mass, and the difference between the mass loss rate of the powder at 370° C. and the mass loss rate of the powder at 300° C. is not less than 1 percent by mass and not more than 6 percent by mass.
    Type: Application
    Filed: March 27, 2020
    Publication date: June 9, 2022
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Yoshimune ABE, Nariyasu KANUKA, Shigeki OKADA
  • Patent number: 11084029
    Abstract: An object of the present invention is to provide a catalyst ensuring that in the case of causing gas-phase catalytic oxidation of an unsaturated aldehyde and an oxygen-containing gas with use of the catalyst to produce a corresponding unsaturated carboxylic acid, the pressure loss can be kept low and an unsaturated carboxylic acid can be produced with high selectivity. The present invention relates to a ring-shaped or columnar catalyst, which is used at the time of producing a corresponding unsaturated carboxylic acid by causing gas-phase catalytic oxidation of an unsaturated aldehyde and an oxygen-containing gas, wherein the outer peripheral edge part is inclined relative to the center line.
    Type: Grant
    Filed: January 24, 2019
    Date of Patent: August 10, 2021
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Kazuharu Tazawa, Yoshimune Abe, Mitsunobu Ito
  • Patent number: 11033891
    Abstract: An object of the present invention is to provide a catalyst ensuring that in the case of causing gas-phase catalytic oxidation of an unsaturated aldehyde and an oxygen-containing gas with use of the catalyst to produce a corresponding unsaturated carboxylic acid, the pressure loss can be kept low and an unsaturated carboxylic acid can be produced with high selectivity. The present invention relates to a ring-shaped or columnar catalyst, which is used at the time of producing a corresponding unsaturated carboxylic acid by causing gas-phase catalytic oxidation of an unsaturated aldehyde and an oxygen-containing gas, wherein the outer peripheral edge part is inclined relative to the center line.
    Type: Grant
    Filed: January 24, 2019
    Date of Patent: June 15, 2021
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Kazuharu Tazawa, Yoshimune Abe, Mitsunobu Ito
  • Publication number: 20190151835
    Abstract: An object of the present invention is to provide a catalyst ensuring that in the case of causing gas-phase catalytic oxidation of an unsaturated aldehyde and an oxygen-containing gas with use of the catalyst to produce a corresponding unsaturated carboxylic acid, the pressure loss can be kept low and an unsaturated carboxylic acid can be produced with high selectivity. The present invention relates to a ring-shaped or columnar catalyst, which is used at the time of producing a corresponding unsaturated carboxylic acid by causing gas-phase catalytic oxidation of an unsaturated aldehyde and an oxygen-containing gas, wherein the outer peripheral edge part is inclined relative to the center line.
    Type: Application
    Filed: January 24, 2019
    Publication date: May 23, 2019
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Kazuharu Tazawa, Yoshimune Abe, Mitsunobu Ito