A kind of preparation method of porous graphene
A technology of graphene and ammonium, which is applied in the field of preparation of porous graphene, can solve the problems of poor economic benefit, complicated process, unfavorable application, etc., and achieve the effects of low price, simple preparation process, and avoiding environmental pollution and waste of resources
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Embodiment 1
[0024] Embodiment 1: a kind of preparation method of porous graphene is characterized in that it is prepared by the following method: medium temperature coal tar pitch and ammonium sulfate or ammonium phosphate are fully mixed in a ball mill in a ratio of 1:5 by mass ratio, and Put the mixed powder into an oven at 200°C for 24 hours to oxidize, then put the oxidized powder into a porcelain boat, put it into a tube furnace, and raise the temperature to 300°C at 5°C / min in a nitrogen atmosphere , kept for 1.9h, then heated up to 500°C at 4.8°C / min, kept for 2h, finally raised to 1070°C at 5°C / min, kept for 1h, then cooled to room temperature and discharged, and finally soaked in deionized water and washed for 3 times, and then placed in a vacuum oven at a temperature of 92°C for 10.8 hours, and dried to prepare a porous graphene-like material.
Embodiment 2
[0025] Embodiment 2: a kind of preparation method of porous graphene is characterized in that it is prepared by the following method: medium temperature coal tar pitch and ammonium sulfate or ammonium phosphate are fully mixed in a ball mill in a ratio of 1:7 by mass ratio, and Put the mixed powder into an oven at 198°C for 23 hours to oxidize, then put the oxidized powder into a porcelain boat, put it into a tube furnace, and raise the temperature to 300°C at 4.2°C / min in a nitrogen atmosphere , kept for 1.8h, then heated up to 500°C at 5°C / min, kept for 1.4h, finally raised to 1100°C at 5.2°C / min, kept for 1.2h, then cooled to room temperature and discharged, and finally soaked in deionized water, and Wash 3 times, then place in a vacuum oven at 80°C for 11 hours, and dry to prepare a porous graphene-like material.
Embodiment 3
[0026] Embodiment 3: a kind of preparation method of porous graphene is characterized in that it is prepared by the following method: medium temperature coal tar pitch and ammonium sulfate or ammonium phosphate are fully mixed in a ball mill in a ratio of 1:9 by mass ratio, and The mixed powder was oxidized in an oven at 196°C for 22 hours, and then the oxidized powder was loaded into a porcelain boat and placed in a tube furnace, and the temperature was raised to 300°C at 4.4°C / min in a nitrogen atmosphere , kept for 1h, then heated up to 500°C at 5.2°C / min, kept for 1.3h, finally raised to 800°C at 4.8°C / min, kept for 1.8h, then cooled to room temperature and discharged, and finally soaked in deionized water and washed 4 times, and then placed in a vacuum drying oven at a temperature of 82° C. for 11.2 hours, and obtained a porous graphene-like material after drying.
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