	US 12,281,275 B2
	Carbon material and production method therefor
Eiichiroh Mori, Tokyo (JP); Kenichi Sekimoto, Tokyo (JP); Sugura Takeda, Tokyo (JP); and Yukio Kowaki, Tokyo (JP)
Assigned to Nippon Steel Engineering Co., Ltd., Tokyo (JP)
Appl. No. 18/292,792
Filed by NIPPON STEEL ENGINEERING CO., LTD., Tokyo (JP)
PCT Filed Sep. 16, 2022, PCT No. PCT/IB2022/058753 § 371(c)(1), (2) Date Jan. 26, 2024, PCT Pub. No. WO2023/012773, PCT Pub. Date Feb. 9, 2023.
Claims priority of application No. 2021-128011 (JP), filed on Aug. 4, 2021.
Prior Publication US 2024/0263094 A1, Aug. 8, 2024
Int. Cl. C10L 5/44 (2006.01); C01B 32/05 (2017.01); C10B 53/02 (2006.01)

CPC C10L 5/447 (2013.01) [C01B 32/05 (2017.08); C10B 53/02 (2013.01); C10L 2200/0469 (2013.01)]

16 Claims

1. A method for producing a carbon material, the method comprising:

a carbonization step of obtaining biomass chars having a carbon content of 61 to 75% by weight from biomass; and

an oxidation step of heating the biomass chars to 200° C. or higher and lower than 300° C. in an atmosphere having an oxygen concentration of 2 to 13% by volume to obtain the carbon material.