公开(公告)号：US20240055641A1

公开(公告)日：2024-02-15

申请号：US18260842

申请日：2021-08-12

Applicant: CHIYODA CORPORATION ,  KYOTO UNIVERSITY

Inventor： Yoshimi OKADA ,  Takuo YASUNISHI ,  Kenichi IMAGAWA ,  Koichi EGUCHI ,  Toshiaki MATSUI ,  Hiroki MUROYAMA ,  Takashi OZEKI

IPC: H01M8/1246

CPC classification number: H01M8/1246 ,  H01M2008/1293

Abstract: [Task] Provided is a proton conductor and a manufacturing method thereof that are suitable for the use in a temperature range between 200° C. and 600° C.
[Solution] A proton conductor has electric conductivity of 0.01 S/cm or more at 300° C., wherein a portion of lithium ions of Li14−2xZn1+x(GeO4)4 is substituted with protons. The x is a number equal to or more than 0. 40% to 70% inclusive of movable lithium ions contained in Li14−2xZn1+x(GeO4)4 may be substituted with the protons. 50% to 60% inclusive of movable lithium ions contained in Li14−2xZn1+x as (GeO4)4 may be substituted with the protons. A manufacturing method of a proton conductor comprises a process of substituting a portion of lithium ions with protons by immersing Li14−2xZn1+x(GeO4)4 in a non-aqueous organic solvent containing acid.

公开(公告)号：US20230356165A1

公开(公告)日：2023-11-09

申请号：US18026720

申请日：2021-04-16

Applicant: Chiyoda Corporation

Inventor： Yoshimi OKADA ,  Kenichi IMAGAWA ,  Tomoyuki MIKURIYA ,  Hironori KAWAI ,  Yusuke NAKAJIMA

IPC: B01J8/06 ,  B01J8/00 ,  C01B3/26 ,  B01J35/10 ,  B01J35/00 ,  B01J35/02

CPC classification number: B01J8/067 ,  B01J8/001 ,  C01B3/26 ,  B01J35/1066 ,  B01J35/1019 ,  B01J35/1042 ,  B01J35/0066 ,  B01J35/023 ,  C01B2203/0277 ,  C01B2203/0425 ,  C01B2203/1252 ,  C01B2203/1017 ,  C01B2203/107 ,  C01B2203/0833 ,  C01B2203/1082 ,  C01B2203/0827

Abstract: [Task] To avoid use of direct fire and suppress CO2 emission when heating a heat medium used to input heat to dehydrogenation reaction of hydrogenated aromatics.
[Solution] A hydrogen station 1 includes: a dehydrogenation reactor 23 that produces hydrogen by dehydrogenation reaction of a hydrogenated aromatic in presence of a dehydrogenation catalyst; a heat supply device 26 that supplies heat to the dehydrogenation reactor via a heat medium heated by using fuel; and a PSA device 33 that purifies a reaction product gas in the dehydrogenation reactor by using an adsorbent according to a pressure swing adsorption method, wherein the PSA device is supplied with a purge gas containing hydrogen used in regeneration of the adsorbent, the heat supply device includes a storage tank 27 storing the heat medium and a catalytic combustion tube 28 disposed in the storage tank to catalytically combust the fuel in presence of a combustion catalyst, and the catalytic combustion tube is supplied with the purge gas discharged from the PSA device as the fuel together with air.

公开(公告)号：US20230343978A1

公开(公告)日：2023-10-26

申请号：US18245827

申请日：2021-08-12

Applicant: Chiyoda Corporation

Inventor： Yoshimi OKADA ,  Takuo YASUNISHI ,  Kenichi IMAGAWA ,  Daisuke KUROSAKI

IPC: H01M8/1246 ,  H01M8/1213 ,  H01M8/0612 ,  H01M4/92 ,  H01M8/1231 ,  H01M8/0656 ,  C25B1/042 ,  C25B1/02 ,  C25B9/05 ,  C25B13/07

CPC classification number: H01M8/1246 ,  H01M8/1213 ,  H01M8/0612 ,  H01M4/925 ,  H01M8/1231 ,  H01M8/0656 ,  C25B1/042 ,  C25B1/02 ,  C25B9/05 ,  C25B13/07 ,  H01M2300/0074 ,  H01M2008/1293

Abstract: Provided is an electrochemical cell, a power generation method using the electrochemical cell, and a manufacturing method of a hydrogen gas using the electrochemical cell that are suitable for the use in a temperature range between 200° C. and 600° C.
A fuel cell 1 (electrochemical cell) includes a proton conductor 5 represented by (Li, H)14−2xZn1+x(GeO4)4 where a portion of lithium ions of Li14−2xZn1+x(GeO4)4 where x is a number equal to or more than 0 is substituted with protons, the proton conductor having electric conductivity of 0.01 S/cm or more at 300° C., an anode 6 provided on one side of the proton conductor, a cathode 7 provided on another side of the proton conductor, a first separator 9 provided on an anode side of the proton conductor to define an anode chamber 8, and a second separator 12 provided on a cathode side of the proton conductor to define a cathode chamber 11.

公开(公告)号：US20230148027A1

公开(公告)日：2023-05-11

申请号：US17918661

申请日：2020-04-23

Applicant: Chiyoda Corporation

Inventor： Yoshimi OKADA ,  Kenichi IMAGAWA ,  Masashi SAITO ,  Kenta FUKUDOME ,  Haruto KOBAYASHI

IPC: B01J23/652 ,  B01J21/04 ,  B01J35/00 ,  B01J37/18 ,  C07C5/367

CPC classification number: B01J23/6525 ,  B01J21/04 ,  B01J35/008 ,  B01J37/18 ,  C07C5/367

Abstract: To provide an egg shell-type platinum-loaded alumina catalyst demonstrating excellent performance in terms of catalyst life, an egg shell-type platinum-loaded alumina catalyst includes: an alumina carrier; platinum dispersed and loaded on an outer shell of the alumina carrier; and one or more second components selected from the group consisting of vanadium, chromium, molybdenum, and phosphorus. Preferably, the content of platinum is 0.05 to 5.0 wt % calculated as elemental platinum. The content of each second component preferably is 0.1 to 5.0 wt % calculated as each element. The alumina carrier has a surface area of 150 m2/g or more, a pore volume of 0.40 cm3/g or more, and an average pore diameter of 40 to 300 Å, with pores having a pore diameter in a range of ±30 Å from the average pore diameter occupying 60% or more of a total pore volume.

公开(公告)号：US20230338927A1

公开(公告)日：2023-10-26

申请号：US18024924

申请日：2021-04-16

Applicant: Chiyoda Corporation

Inventor： Yoshimi OKADA ,  Kenichi IMAGAWA ,  Shinichi NAKATA

IPC: B01J23/42 ,  B01J23/04 ,  B01J27/02 ,  B01J35/10 ,  B01J35/00 ,  B01J37/03 ,  B01J37/02 ,  B01J37/08 ,  B01J37/18 ,  C07C5/32

CPC classification number: B01J23/42 ,  B01J23/04 ,  B01J27/02 ,  B01J35/1019 ,  B01J35/1042 ,  B01J35/1061 ,  B01J35/0066 ,  B01J35/0013 ,  B01J35/006 ,  B01J37/031 ,  B01J37/0236 ,  B01J37/088 ,  B01J37/0205 ,  B01J37/024 ,  B01J37/18 ,  C07C5/325 ,  C07C2601/14 ,  C07C2602/28 ,  C07C2523/42

Abstract: To provide a platinum-loaded alumina catalyst with an improved catalyst life.
A platinum-loaded alumina catalyst includes an alumina carrier, and platinum loaded on the alumina carrier, wherein the alumina carrier includes a γ-alumina carrier having a surface area of 200 m2/g or more, a pore volume of 0.50 m2/g or more, an average pore diameter in a range of 60 to 150 Å, with pores having a pore diameter in a range of ±30 Å from the average pore diameter occupying 60% or more of a total pore volume, platinum particles are loaded on γ-alumina carrier in a range of 0.1 to 1.5% by weight calculated as elemental platinum (Pt), and 70% or more of the platinum particles have a size of 8 to 15 Å by direct observation using a transmission electron microscope.

公开(公告)号：US20230141512A1

公开(公告)日：2023-05-11

申请号：US17918591

申请日：2020-04-23

Applicant: Chiyoda Corporation

Inventor： Yoshimi OKADA ,  Kenichi IMAGAWA ,  Masashi SAITO ,  Kenta FUKUDOME ,  Haruto KOBAYASHI

IPC: B01J23/58 ,  B01J27/02 ,  B01J21/04 ,  B01J35/10 ,  B01J35/00 ,  B01J37/02 ,  B01J37/18 ,  C07C5/367

CPC classification number: B01J23/58 ,  B01J27/02 ,  B01J21/04 ,  B01J35/1019 ,  B01J35/1038 ,  B01J35/1061 ,  B01J35/008 ,  B01J37/0201 ,  B01J37/0236 ,  B01J37/18 ,  C07C5/367 ,  C07C2523/58 ,  C07C2521/04

Abstract: To provide a uniform-type platinum-loaded alumina catalyst demonstrating excellent performance in terms of catalyst life, a uniform-type platinum-loaded alumina catalyst includes: an alumina carrier; sulfur or a sulfur compound dispersed over an entire cross section of the alumina carrier; platinum dispersed and loaded over the entire cross section of the alumina carrier; one or more alkali metals selected from the group consisting of sodium, potassium, and calcium. Preferably, the content of platinum is 0.05 to 5.0 wt % calculated as elemental platinum. The content of the sulfur or the sulfur compound preferably is 0.15 to 5.0 wt % calculated as elemental sulfur. The content of the alkali metal preferably is 0.1 to 5.0 wt % calculated as elemental alkali metal.