A kind of activated carbon and preparation method thereof
A technology of activated carbon and pore-enlarging agent, applied in the field of material science, which can solve the problems of long pore-expanding treatment, low mesoporosity, and low carrier preparation efficiency, and achieves simple preparation method, high mesoporosity, and easy promotion and implementation Effect
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Embodiment 1
[0018] Take 5g of commercial activated carbon, crush it to 12-16 mesh, impregnate it in 25gK 2 CO 3 solution (20wt%), dried under an infrared lamp; the sample was placed in a tube furnace, heat-treated at 1000°C for 1h in an ammonia atmosphere (gas flow rate of 50mL / min), and then cooled to room temperature in an ammonia atmosphere Take it out; then wash the sample with distilled water until the washing solution is neutral, and dry it in an oven at 110°C for 6 hours to obtain the product (pore expander: activated carbon = 1:1).
Embodiment 2
[0020] Take 5g of commercial activated carbon, crush it to 12-16 mesh, impregnate it in 25gK 2 CO 3 solution (20wt%), dried under an infrared lamp; the sample was placed in a tube furnace, and heat-treated at 1000 ° C for 1 h in a mixed atmosphere of ammonia and nitrogen (gas flow rate of 10 mL / min), and then ammonia and nitrogen Take it out in a nitrogen mixed atmosphere down to room temperature; then wash the sample with distilled water until the washing solution is neutral, and dry it in an oven at 90°C for 20 hours to obtain the product.
Embodiment 3
[0022] Take 5g of commercial activated carbon, crush it to 12-16 mesh, impregnate it in 25g Na 2 CO 3 solution (20wt%), dried under an infrared lamp; the sample was placed in a tube furnace, heat-treated at 1000°C for 1h in an ammonia atmosphere (gas flow rate of 100mL / min), and then cooled to room temperature in an ammonia atmosphere Take it out; then wash the sample with distilled water until the washing solution is neutral, and dry it in an oven at 130°C for 3 hours to obtain the product.
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Abstract
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