公开(公告)号：US11189841B2

公开(公告)日：2021-11-30

申请号：US16336129

申请日：2017-09-29

申请人： MITSUI MINING & SMELTING CO., LTD.

发明人： Yuichi Senoo ,  Koichi Miyake ,  Koji Taniguchi ,  Hiromu Watanabe ,  Naohiko Abe

IPC分类号： H01M4/80 ,  H01M4/88 ,  H01M8/1004 ,  H01M4/92 ,  H01M4/86 ,  H01M4/90 ,  H01M8/10

摘要： This method for producing an electrode catalyst includes: a dispersion liquid preparation step wherein a dispersion liquid is prepared by mixing (i) at least one solvent selected from the group consisting of sulfoxide compounds and amide compounds, (ii) a catalyst carrier powder composed of a metal oxide, (iii) a platinum compound, (iv) a transition metal compound and (v) an aromatic compound that contains a carboxyl group; a loading step wherein the dispersion liquid is heated so that a platinum alloy of platinum and a transition metal is loaded on the surface of the catalyst carrier powder; a solid-liquid separation step wherein a dispersoid is separated from the dispersion liquid after the loading step, thereby obtaining a catalyst powder wherein the catalyst carrier powder is loaded with the platinum alloy; and a heat treatment step wherein the catalyst powder is heated under vacuum or in a reducing gas atmosphere.

公开(公告)号：US12083509B2

公开(公告)日：2024-09-10

申请号：US17606912

申请日：2020-06-29

申请人： Mitsui Mining & Smelting Co., Ltd.

发明人： Yuichi Senoo ,  Katsuhiko Hayashi ,  Junki Tomita ,  Takahiro Kogawa ,  Akihiro Kanno

IPC分类号： B01J29/00 ,  B01J29/70 ,  B01J35/50 ,  B01J35/58 ,  C01B39/46 ,  C07C4/06

CPC分类号： B01J29/7057 ,  B01J35/50 ,  B01J35/58 ,  C01B39/46 ,  C07C4/06 ,  B01J2229/18 ,  C01P2002/72 ,  C07C2529/70

摘要： Provided is a beta zeolite satisfying P>76.79Q−29.514 in a range in which Q is less than 0.4011 nm, wherein, P represents an AB value that is an intensity ratio of A to B, A represents a diffraction intensity of a main peak of the beta zeolite observed by X-ray diffraction measurement, B represents a diffraction intensity of the (116) plane of α-alumina obtained by X-ray diffraction measurement under the same conditions as those for the X-ray diffraction measurement on the beta zeolite, the α-alumina being the standard substance 674a distributed by the American National Institute of Standards and Technology, and Q represents a lattice interplanar spacing of the main peak of the beta zeolite observed by X-ray diffraction measurement. It is preferable that the formula (1) above is satisfied in a range in which Q is from 0.3940 to 0.4000 nm.

公开(公告)号：US11302929B2

公开(公告)日：2022-04-12

申请号：US16091292

申请日：2017-08-25

申请人： MITSUI MINING & SMELTING CO., LTD. ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： Yuichi Senoo ,  Koichi Miyake ,  Koji Taniguchi ,  Hiromu Watanabe ,  Naohiko Abe ,  Tatsuya Arai

IPC分类号： H01M4/92 ,  H01M8/1039 ,  H01M8/10

摘要： Provided is a method with which it is possible to easily produce an electrode catalyst having excellent catalytic performance such as kinetically controlled current density. The method involves: a dispersion liquid preparation step of preparing a dispersion liquid by mixing (i) at least one type of solvent selected from the group consisting of sulfoxide compounds and amide compounds, (ii) a catalyst carrier powder constituted by a metal oxide, (iii) a platinum compound, (iv) a transition metal compound, and (v) an aromatic compound including a carboxyl group; and a loading step of heating the dispersion liquid to thereby load a platinum alloy of platinum and a transition metal on a surface of the catalyst carrier powder.