METHOD FOR PRODUCING CARBON AND HYDROGEN, CARBON MATERIAL, REDUCING AGENT, AND METHOD FOR DECOMPOSING CARBON DIOXIDE
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United States of America Patent
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Issued Date -
Sep 19, 2024
app pub date -
Jun 29, 2022
filing date -
Jun 29, 2021
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Abstract
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.
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