net-negative emissions
Chinese researchers achieve net-negative emissions with electrified catalysis
Chinese scientists have developed an innovative electrified catalysis strategy that removes more greenhouse gases than it produces, achieving net-negative emissions, according to a study published Saturday in Science Advances.
Carbon dioxide and methane are the two main greenhouse gases generated by human activity. Eliminating or significantly reducing these gases has become a top scientific priority in the fight against climate change.
Traditionally, greenhouse gases have been removed using a method known as dry reforming of methane (DRM), which requires extremely high temperatures — often over 800 degrees Celsius — and typically relies on fossil fuels. However, the carbon emissions from powering the process often exceeded the amount of gas converted, undercutting its environmental benefits.
A research team from the Ningbo Institute of Materials Technology and Engineering (NIMTE) of the Chinese Academy of Sciences and the University of Jinan has introduced a new electrified catalysis method, termed electrified DRM (e-DRM).
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In the study, e-DRM successfully converted carbon dioxide and methane into syngas — a mixture of hydrogen and carbon monoxide — with an energy utilization rate of 80 percent. The process also achieved thermodynamic equilibrium conversion and remained stable for over 120 hours.
Importantly, the e-DRM method uses renewable electricity from wind, solar, hydropower, or nuclear sources, allowing it to convert more carbon dioxide than is emitted during electricity generation.
According to NIMTE, this breakthrough could help move DRM from the laboratory stage toward practical, commercial applications in the fight against global warming.
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