A preparation method of sulfur and nitrogen doped peel-based mesoporous carbon material by double-template method
A dual-template, peel-based technology, applied in the preparation/purification of carbon, can solve the problems of cumbersome process and large energy consumption, and achieve the effects of simple process, high added value reuse and high proportion
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Embodiment 1
[0024] Weigh 0.8 g of nano-silica, 1.5 g of grapefruit peel powder acidified with HCl+HF mixed acid, 0.8 g of benzenesulfonamide, and 0.5 g of polyether Pluronic P123, and slowly add them to 50 ml of absolute ethanol, stir while adding, and ultrasonically 1h, transferred to the autoclave, and reacted at 80°C for 4h to obtain the prepolymer. After the reaction was completed, the mixture was washed alternately with petroleum ether and deionized water for 3 times, and dried under vacuum at 60° C. to obtain the mesoporous carbon precursor. The above mesoporous carbon precursor was placed in a tube furnace, first heated to 300°C at a rate of 5°C / min under the protection of Ar gas, then heated to 600°C at 15°C / min, carbonized at 600°C for 3 h, followed by carbonization. The furnace is cooled to room temperature and then etched with HF (the specific steps of HF etching are: disperse the product cooled to room temperature in a 2mol / L hydrofluoric acid solution, soak it in a water bath...
Embodiment 2
[0028] Weigh 1.2g of nano-magnesium oxide, 1.0g of HCl+HF mixed acid acidified walnut shell powder, 1.0g of p-aminobenzenesulfonamide, 0.5g of polyether Pluronic P123, and slowly add them to 50ml of absolute ethanol, and stir while adding, Ultrasonic for 1 h, transferred to an autoclave, and reacted at 160 °C for 5 h to obtain a prepolymer. After the reaction was completed, the mixture was washed alternately with petroleum ether and deionized water for 3 times, and dried under vacuum at 60° C. to obtain the mesoporous carbon precursor. The above mesoporous carbon precursors were placed in a tube furnace, first heated to 500 °C at a rate of 5 °C / min under Ar gas protection, and then heated to 800 °C at 10 °C / min, carbonized at 800 °C for 4 h, followed by carbonization. The furnace is cooled to room temperature and then etched with hydrochloric acid (the specific steps of hydrochloric acid etching are: disperse the product cooled to room temperature in 1 mol / L hydrochloric acid ...
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