Method for converting carbon dioxide into methane through metal hydride

The invention provides a method for converting carbon dioxide into methane through metal hydride, which comprises the following steps: step 1, carrying out hydrogenation reaction on Mg powder and H2 at 300-600 DEG C to obtain an MgH2 hydrogen storage material; the preparation method comprises the fo...

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Bibliographic Details
Main Authors WANG JIAHAO, ZHOU QIANG, CAI YUNTING
Format Patent
LanguageChinese
English
Published 01.03.2022
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
COMPOUNDS THEREOF
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
ORGANIC CHEMISTRY
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Summary:The invention provides a method for converting carbon dioxide into methane through metal hydride, which comprises the following steps: step 1, carrying out hydrogenation reaction on Mg powder and H2 at 300-600 DEG C to obtain an MgH2 hydrogen storage material; the preparation method comprises the following steps: carrying out ball milling on Mg powder and one or more transition metals of Fe, Ni and Co, and carrying out hydrogenation reaction on the obtained mixture and H2 at 300-600 DEG C to obtain the composite magnesium hydrogen storage material, step 2, reacting the molecular sieve adsorbed with CO2 with an MgH2 hydrogen storage material or a composite magnesium hydrogen storage material at 250-600 DEG C under the protection of inert gas to obtain mixed gas; 3, methane in the mixed gas is separated, methane is obtained, carbon dioxide is converted into methane through the magnesium-based hydrogen storage material, carbon sequestration utilization is achieved, conversion of carbon dioxide is promoted, and t
Bibliography:Application Number: CN202111426033