Patents by Inventor Kazuhiro Takanabe

Kazuhiro Takanabe 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).

  • Publication number: 20230242682
    Abstract: A partial oxidative coupling catalyst has a structure in which a component represented by M2ZrO3 is supported on a support, where M represents an alkali metal.
    Type: Application
    Filed: September 16, 2021
    Publication date: August 3, 2023
    Applicants: MITSUBISHI HEAVY INDUSTRIES, LTD., The University of Tokyo
    Inventors: Atsuhiro Yukumoto, Yukio Tanaka, Noriaki Senba, Kazuhiro Takanabe, Bhavin Siritanaratkul
  • Publication number: 20210115583
    Abstract: The present invention relates to the electrodeposition and photochemical deposition of one or more material layer that protects metal surfaces from unwanted redox reactions. The deposited layer materials are composed of silicon oxide prepared in the presence of tetraalkylammonium shape directing agent. The deposited layer can be cathodically electrodeposited onto a metallic material. The deposition results in a uniform and acid-tolerant thin layer (15 nm-100 nm), which functions as a membrane to prevent dissolved gaseous reactants and various ions from penetrating. The silicon oxide protection layer also prevents corrosion underneath the layer. In the present invention, a process for producing these membranes is disclosed, with an example exhibiting the selective hydrogen evolution reaction (HER) excluding the reaction of coexisting redox ions and oxygen (corrosion inhibition).
    Type: Application
    Filed: August 16, 2017
    Publication date: April 22, 2021
    Inventors: Kazuhiro TAKANABE, Jeremy BAU
  • Publication number: 20200308720
    Abstract: Oxygen evolution electrocatalysts, electrodes using oxygen evolution electrocatalysts, and methods of making oxygen evolution electrocatalysts are provided. The oxygen evolution electrocatalyst includes an oxide electrocatalyst and a permselective amorphous layer deposited on the oxide electrocatalyst. In this regard, the permselective amorphous layer may prevent diffusion of redox ions but permit diffusion of hydroxide ions and evolved O2 through the permselective amorphous layer.
    Type: Application
    Filed: September 19, 2018
    Publication date: October 1, 2020
    Inventors: Kazuhiro Takanabe, Keisuke Obata
  • Patent number: 10472722
    Abstract: Provided herein are scalable photoreactors that can include a membrane-free water-splitting electrolyzer and systems that can include a plurality of membrane-free water-splitting electrolyzers. Also provided herein are methods of using the scalable photoreactors provided herein.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: November 12, 2019
    Assignee: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Kazuhiro Takanabe, Tatsuya Shinagawa
  • Publication number: 20190330059
    Abstract: The present invention uses a cobalt catalyst for carbon dioxide reforming of lower alkanes to synthesis gas having a cobalt catalyst on an oxide support where the supported cobalt catalyst has been modified with a boron precursor. The boron-treated cobalt catalyst systems as described herein show significant increases in the conversion of CH4 and CO2 during the dry reforming of methane (DRM) reaction as compared to traditional catalysts. Described herein are supported catalysts and methods of using the catalysts for the dry reforming of methane to synthesis gas, with the supported catalysts in the present invention include a boron-treated cobalt catalyst disposed on an oxide support. Also described herein are processes for preparing the supported catalysts.
    Type: Application
    Filed: June 24, 2017
    Publication date: October 31, 2019
    Inventors: Kazuhiro TAKANABE, Jean-Marie BASSET, Jung-Hyun PARK, Akshaya SAMAL, Bedour ALSABBAN
  • Publication number: 20180195182
    Abstract: Provided herein are scalable photoreactors that can include a membrane-free water-splitting electrolyzer and systems that can include a plurality of membrane-free water-splitting electrolyzers. Also provided herein are methods of using the scalable photoreactors provided herein.
    Type: Application
    Filed: September 29, 2016
    Publication date: July 12, 2018
    Inventors: Kazuhiro TAKANABE, Tatsuya SHINAGAWA
  • Publication number: 20170354962
    Abstract: Disclosed is a supported nanoparticle catalyst, methods of making the supported nanoparticle 5 catalysts and uses thereof. The supported nanoparticle catalyst includes catalytic metals M1, M2, M3, and a support material. M1 and M2 are different and are each selected from nickel (Ni), cobalt (Co), manganese (Mn), iron (Fe), copper (Cu) or zinc (Zn), wherein M1 and M2 are dispersed in the support material. M3 is a noble metal deposited on the surface of the nanoparticle catalyst and/or dispersed in the support material. The nanoparticle catalyst is 10 capable of producing hydrogen (H2) and carbon monoxide (CO) from methane (CH4) and carbon dioxide (CO2).
    Type: Application
    Filed: November 19, 2015
    Publication date: December 14, 2017
    Inventors: Lawrence D'Souza, Kazuhiro Takanabe, Paco Laveille, Bedour Al Sabban, Jean-Marie Basset, Lidong Li
  • Patent number: 9579639
    Abstract: The present invention is directed, at least in part, to a process for improving the efficiency of a photocatalyst (a semiconductor photocatalyst) by tethering (depositing) a metal (e.g., metal ions of a late transition metal, such as nickel) to the semiconductor (photocatalyst) surface through the use of an organic ligand. More specifically, 1,2-ethanedithiol (EDT) functions as an excellent molecular linker (organic ligand) to attach a transition metal complex (e.g., nickel (Ni2+ ions)) to the semiconductor surface, which can be in the form of a cadmium sulfide surface. The photocatalyst has particular utility in generating hydrogen from H2S.
    Type: Grant
    Filed: September 4, 2014
    Date of Patent: February 28, 2017
    Assignees: SAUDI ARABIAN OIL COMPANY, KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Kazuhiro Takanabe, Tayirjan Isimjan, Weili Yu, Silvano Del Gobbo, Wei Xu
  • Publication number: 20150064105
    Abstract: The present invention is directed, at least in part, to a process for improving the efficiency of a photocatalyst (a semiconductor photocatalyst) by tethering (depositing) a metal (e.g., metal ions of a late transition metal, such as nickel) to the semiconductor (photocatalyst) surface through the use of an organic ligand. More specifically, 1,2-ethanedithiol (EDT) functions as an excellent molecular linker (organic ligand) to attach a transition metal complex (e.g., nickel (Ni2+ ions)) to the semiconductor surface, which can be in the form of a cadmium sulfide surface. The photocatalyst has particular utility in generating hydrogen from H2S.
    Type: Application
    Filed: September 4, 2014
    Publication date: March 5, 2015
    Inventors: Kazuhiro Takanabe, Tayirjan Isimjan, Weili Yu, Silvano Del Gobbo, Wei Xu
  • Publication number: 20130313127
    Abstract: The invention provides an organic compound(s) hydrogenation device that allows hydrogen derived from water to be stored essentially without generating hydrogen gas. The organic compound hydrogenation device of the invention comprises an oxidation chamber that holds a water-containing electrolyte, a reduction chamber that holds an organic compound(s) with an unsaturated bond, an electrolyte membrane with ion permeability that separates the electrolyte held in the oxidation chamber from the organic compound(s) held in the reduction chamber, an oxidizing electrode that generates protons from the water held in the oxidation chamber, and a reducing electrode that hydrogenates the organic compound(s) held in the reduction chamber.
    Type: Application
    Filed: December 28, 2011
    Publication date: November 28, 2013
    Applicants: THE UNIVERSITY OF TOKYO, JX NIPPON OIL & ENERGY CORPORATION
    Inventors: Yasushi Sato, Yoshihiro Kobori, Shunsuke Maekawa, Kazunari Domen, Jun Kubota, Masakazu Higuchi, Kazuhiro Takanabe