公开(公告)号：US20240083750A1

公开(公告)日：2024-03-14

申请号：US18272848

申请日：2022-01-28

申请人： MITSUBISHI MATERIALS CORPORATION

发明人： Wenbin Dai ,  Nobutake Horiuchi ,  Kazuhisa Inada ,  Tatsuya Fukuda ,  Miki Itou ,  Yayoi Taneichi ,  Yuko Sakamoto

IPC分类号： C01B32/15

CPC分类号： C01B32/15 ,  C01P2004/64

摘要： There is provided a method for producing a carbon material, including a carbon generation step of causing carbon dioxide to react with a reducing agent to generate carbon, in which, as the reducing agent, an oxygen-deficient iron oxide represented by Fe3O4-δ (where δ is 1 or more and less than 4), which is obtained by reducing magnetite while maintaining a crystal structure, or an oxygen-completely deficient iron (δ=4) which is obtained by completely reducing magnetite is used.

公开(公告)号：US20240308851A1

公开(公告)日：2024-09-19

申请号：US18574457

申请日：2022-06-29

申请人： MITSUBISHI MATERIALS CORPORATION

发明人： Wenbin Dai ,  Nobutake Horiuchi

IPC分类号： C01B32/05 ,  C01B3/08

CPC分类号： C01B32/05 ,  C01B3/08 ,  C01B2203/06

摘要： Provided are a carbon dioxide decomposition step of generating magnetite that has a surface to which carbon adheres, a carbon separation step of generating carbon and iron chloride, a hydrogen production step of generating magnetite, hydrogen, and a hydrogen chloride gas, and a reducing agent regeneration step of generating the reducing agent used in the carbon dioxide decomposition step, in which the reducing agent is an oxygen-deficient iron oxide represented by Fe3O4-δ (where, δ is 1 or more and less than 4) obtained by reducing magnetite while maintaining a magnetite crystal structure, an oxygen-completely deficient iron (δ=4) obtained by completely reducing magnetite, an oxygen-deficient iron oxide obtained by reducing hematite or a used disposable warmer, or an oxygen-completely deficient iron obtained by completely reducing hematite or a used disposable warmer.