According to the physicists organization network report, scientists have developed a method for rapid production of magnesite. Magnesite is a mineral that can store carbon dioxide (CO2). If it can be mass-produced on an industrial scale in the future, it can greatly reduce the long-term presence of CO2 in the atmosphere, thereby resisting the effects of global warming. The research report was submitted at the Goldschmidt Conference, an important academic conference in the international geochemical community held in Boston recently.
Magnesite is a magnesium carbonate mineral. After the solution containing magnesium acts on calcite, it will turn calcite into magnesite, so magnesite also belongs to the calcite family. In addition, magnesium-rich rocks will also change into magnesite. It is understood that one ton of natural magnesite can remove about half a ton of CO2 from the atmosphere, but at a very slow rate. Therefore, although this technology is conducive to reducing CO2 in the atmosphere, there are still problems in practical operation and economic cost.
Ian Ball, a professor at the University of Trent, Canada, who led the research, said that they revealed the formation principle of magnesite at low temperatures and proposed a method that can significantly accelerate its crystallization process: using polystyrene As a catalyst, microspheres can make magnesite form within 72 days. Because the chemical properties of the microspheres remain unchanged throughout the reaction, they can be used efficiently and can greatly reduce the formation time of magnesite. At the same time, this process can take place at room temperature, which means that the production of magnesite is very energy-efficient.
It is understood that this research work is still in the experimental stage. It has been confirmed that magnesite can be used for carbon storage, that is, permanent storage of CO2 in the atmosphere, but further scientific methods are needed to complete the detailed study of storage technology.
Professor Peter Coleman of Columbia University said: "Technologists have learned the principle and mechanism of natural magnesite crystallization at low temperature and applied it efficiently to the artificial production of magnesite. This provides a relatively low cost The carbon storage pathway can even achieve the removal of CO2 from the air in the future, which is very exciting. "(Intern Guo Zishuo)
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