A new method for converting carbon dioxide into methane. Free Technical Library News

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A new method for converting carbon dioxide into methane

02.03.2020

Japanese scientists led by Waseda University professor Yasushi Sekine proposed to carry out a low-temperature catalytic reaction for the synthesis of hydrogen and carbon dioxide into methane using an electric field. The existing industrial process for converting carbon dioxide into methane through the catalytic reaction of hydrogen and carbon dioxide has a number of technological difficulties. In particular, the yield of methane is highly dependent on the required temperature, which should be between 300 and 400 degrees Celsius.

Scientists have proposed a new, low-temperature method (100 degrees Celsius), which produces more efficient production of methane from carbon dioxide than other similar methods.

The developed method uses the interaction of carbon dioxide with nanoparticles of cerium oxide on a ruthenium catalyst when an electric field is applied. Such a catalyst has shown high and stable catalytic activity for the conversion of carbon dioxide to methane by hydrogenation in an electric field.

Researchers claim that this method can be used to obtain methane from carbon dioxide emitted into the atmosphere by industry. The gas obtained in this way can not only replace fossil fuels, but also prevent global warming in the long term.

The method of producing methane using electricity consists of two stages. Through electrolysis, water decomposes into oxygen and hydrogen. The hydrogen is then mixed in the presence of a catalyst with carbon dioxide to produce methane.

The Power-to-gas technology, developed in Germany in 2008, is based on the chemical reaction of obtaining methane from carbon dioxide. The idea was to channel the excess electricity generated by power plants into gas production. Thus, it is possible not only to "storage electricity", then using gas as a fuel for power plants, but also to obtain gas for industry.

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