Method for preparing high-content nitrogen-doped porous carbon materia
A technology of nitrogen-doped porous carbon with high content, applied in the field of nanomaterials, can solve problems such as unsuitable for industrial applications, cumbersome and complicated process, unfriendly environment, etc., to achieve large-scale mass production, wide source of raw materials, simple and effective method Effect
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[0028] Example 1
[0029] like figure 1 shown, figure 1 It is a flow chart of the preparation method of the high-content nitrogen-doped porous carbon material shown in Example 1.
[0030] A method for preparing a high-content nitrogen-doped porous carbon material, comprising the following steps: placing biomass raw corn cob in a blast drying oven, drying at 100° C. for at least 24 hours, and controlling the particle size after crushing and sieving to be 500um, put the corncob particles with a particle size of 500um into the material boat, and place the material boat in the atmosphere furnace; vacuumize the sealed furnace tube, and then replace it with nitrogen twice. Heating, the flow rate of nitrogen is 0.5L / min, the heating rate is 5°C / min, the temperature is slowly raised from room temperature to 400°C, the treatment time is 3 hours, and the temperature is kept at 400°C for 3h; after high-temperature carbonization treatment, when the temperature is 400°C , then quickly e...
Example Embodiment
[0035] Example 2
[0036]A method for preparing a high-content nitrogen-doped porous carbon material, comprising the following steps: placing biomass raw corn cob in a blast drying oven, drying at 100° C. for at least 24 hours, and controlling the particle size after crushing and sieving to be 500um, put the corncob particles with a particle size of 500um into the material boat, and place the material boat in the atmosphere furnace; vacuumize the sealed furnace tube, and then replace it with nitrogen twice. Heating, the flow rate of nitrogen is 0.5L / min, the heating rate is 5°C / min, the temperature is slowly raised from room temperature to 300°C, the treatment time is 3 hours, and the temperature is kept at 300°C for 3h; after high temperature carbonization treatment, when the temperature is 300°C , then quickly evacuated the furnace tube, replaced nitrogen with ammonia gas at least three times, and cleaned the furnace with ammonia gas; continued to program temperature under t...
Example Embodiment
[0037] Example 3
[0038] A method for preparing a high-content nitrogen-doped porous carbon material, comprising the following steps: placing biomass raw coconut shells in a blast drying oven, drying at 150° C. for at least 24 hours, crushing and sieving, and controlling the particle size to be 880um, put coconut shell particles with a particle size of 880um into the material boat, and place the material boat in the atmosphere furnace; vacuumize the sealed furnace tube, and then replace it with nitrogen twice. Heating, the flow rate of nitrogen is 1L / min, the heating rate is 3°C / min, the temperature is slowly raised from room temperature to 300°C, the treatment time is 0.5 hours, and the temperature is kept at 300°C for 3h; after high-temperature carbonization treatment, when the temperature is 300°C, Then quickly vacuum the furnace tube, replace nitrogen with ammonia gas at least three times, and clean the furnace chamber with ammonia gas; continue to program the temperature...
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