Efficient production of nanoporous silicon carbide from rice husk at relatively low temperature |
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Institution: | Heze University Shanxian, 274300 Shanxian, Heze, Shandong, P. R. China |
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Abstract: | Nanoporous silicon carbide with a specific surface area of up to 186.45 m2 g−1 has been efficiently synthesized from waste rice husk using a magnesiothermic reduction at 950 °C as a key step. Throughout the entire process, the recovery rates of silicon, potassium and phosphorus from rice husk can reach 88.46, 91.5 and 65.5%, respectively. Turning rice husk waste into a real treasure, this promising method for producing porous SiC protects the environment and brings economic benefits. |
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Keywords: | rice husk nanoporous silicon carbide high purity magnesiothermic reduction naturally porous structure phosphorus–potassium compound fertilizer |
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