According to the magazine, scientists from Tyumen State University and Tomsk Polytechnic University have developed a method for the simultaneous use of carbon dioxide and production of metal oxide powders. Ceramics International.
The created method is very energy efficient and it is possible to produce high-quality ceramics for a wide variety of tasks from the resulting powders.
According to scientists, one of the main causes of modern environmental problems is the uncontrolled emissions of carbon dioxide and other climate-active gases that lead to the greenhouse effect. Therefore, a method was established to produce nano- and ultrafine metal oxide powders using carbon dioxide as the initial gaseous reagent.
It is possible to produce high quality ceramic products from aluminum oxide powders obtained using new technology. Ceramics made from titanium oxide powders can be used as photocatalysts to produce hydrogen, and from iron oxides as a highly magnetic and radio-absorbing material.
The uniqueness of the new approach is that the amount of energy spent to implement the process makes it possible to process three times more carbon dioxide than is assumed in the standard procedure for sequestering carbon dioxide.
The efficiency of energy use during carbon dioxide conversion is about 300%, while for the best analogues this figure is no more than 80%.
After the formation of an electric arc in a unique accelerator, a plasma is formed, which, in motion, accelerates and contains metal particles on the surface of the electrodes. Then the plasma enters the working chamber with carbon dioxide and reacts with it, leading to decomposition and oxidation of metal particles.
Previously reportedIt is predicted that global carbon dioxide (CO2) emissions will increase by 0.5-1.5% in 2023, breaking the historical record.
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