This discovery is another step forward in finding alternative uses for coal at a time when
In the new paper, the researchers claim that theycreated a microwave environment to successfully convert raw carbon powder into nanographite, which is used as a lubricant and in products ranging from fire extinguishers to lithium-ion batteries.
This "one-step microwave processusing metal ”is a new approach that can be a simple and relatively inexpensive coal conversion technology.
Early research has shown that microwaves canused to reduce moisture in coal and remove sulfur and other minerals. However, most of these methods require special chemical pre-treatment of the coal.
In their experiment, the researchers simply ground the raw coal.
The powder was then placed on copper foil andsealed in glass containers with a gas mixture of argon and hydrogen. For the experiment, a conventional microwave was chosen: it is more convenient and can provide the desired level of radiation.
Sparks caused by microwaves generatedhigh temperatures required to convert carbon powder into polycrystalline graphite. Researchers claim that The new coal conversion method can be improved and implemented on a larger scale to produce both higher quality and quantity of nanographite materials.
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