公开(公告)号：US20250146145A1

公开(公告)日：2025-05-08

申请号：US18839756

申请日：2023-02-22

Applicant: OSAKA UNIVERSITY ,  IDEMITSU KOSAN CO., LTD.

Inventor： Kazuhide KAMIYA ,  Rino SUGIMOTO ,  Qingxin JIA ,  Hiroyuki KANEKO

IPC: C25B9/23 ,  C25B3/26 ,  C25B11/032 ,  C25B11/037 ,  C25B11/065 ,  C25B11/091 ,  C25B13/05

Abstract: A catalyst that has a high electrolytic activity and a high CO2 reduction reaction rate and a method of producing the same, a cathode, an ion exchange membrane-electrode assembly, and a solid electrolyte electrolysis apparatus are provided. The catalyst includes a metal ion selected from the group consisting of a copper ion, a nickel ion, an iron ion, a cobalt ion, a zinc ion, a manganese ion, a molybdenum ion, and an aluminum ion, a nitrogen-containing compound, and a carrier containing carbon having a primary particle diameter of 5 to 200 nm, the metal ion is coordinated to the nitrogen atom on the nitrogen-containing compound, the catalyst has a content of the metal ion coordinated to the nitrogen atom of 0.7% by mass or more, and the catalyst has a particle diameter of 10 nm to 50 μm.

公开(公告)号：US20250084541A1

公开(公告)日：2025-03-13

申请号：US18580531

申请日：2022-07-20

Applicant: CHIYODA CORPORATION ,  OSAKA UNIVERSITY

Inventor： Jun MATSUMOTO ,  Dai TAKEDA ,  Shinya HASHIMOTO ,  Ittetsu OBA ,  Shuji NAKANISHI ,  Kazuhide KAMIYA

IPC: C25B3/26 ,  B01D53/26 ,  B01D53/32 ,  B01D53/62 ,  C25B1/23 ,  C25B3/03 ,  C25B9/19 ,  C25B11/032 ,  C25B13/02 ,  C25B15/023 ,  C25B15/08

Abstract: The carbon dioxide recovery system (1) comprises an electrolytic reduction device (2) that generates a producer gas by reducing carbon dioxide, and a carbon dioxide separation device (3) that separates the carbon dioxide from the processed gas. The carbon dioxide separation device is provided with a first gas diffusion electrode (51), a second gas diffusion electrode (52), a liquid chamber (53) formed between the first gas diffusion electrode and the second gas diffusion electrode (52), and is configured to be supplied with an electrolytic liquid containing a compound that adsorbs and desorbs protons in an oxidation-reduction reaction, a first chamber (54) separated from the liquid chamber by the first gas diffusion electrode and configured to be supplied with the producer gas, and a second chamber (55) separated from the liquid chamber by the second gas diffusion electrode and through which the carbon dioxide separated from the producer gas flow. The electrolytic reduction device uses the carbon dioxide separated from the processed gas in the carbon dioxide separation device as a part of an input material thereof.