Method for preparing porous carbon material from humin and porous carbon material
A porous carbon material, black technology, applied in the application field of humin, can solve the problems of limited large-scale application, numerous steps, high energy consumption, etc., and achieve the effects of large-scale production application, simple preparation process and high specific surface area.
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Embodiment 1
[0027] Embodiment 1: a method for preparing porous carbon material from humin, comprising the following steps:
[0028] 1) Add humin and potassium permanganate (mass ratio 1:0.05) into a mixed solution of water and ethanol (volume ratio 1:0.5), stir at room temperature for 8 hours, and dry in an oven at 80°C to obtain a black solid ;
[0029] 2) Put the black solid into a tube furnace protected by helium gas, and calcine it at 300℃ for 1h;
[0030] 3) After cooling, take out the black solid and repeatedly rinse with deionized water and 1 mol / L acetic acid solution to obtain the biomass porous carbon material. Its BET test data is shown in Table 1.
Embodiment 2
[0031] Embodiment 2: a method for preparing porous carbon material from humin, comprising the following steps:
[0032] 1) Add humin and potassium permanganate (mass ratio 1:0.1) into a mixed solution of water and ethanol (volume ratio 1:3), stir at room temperature for 12 hours, and dry in an oven at 120°C to obtain a black solid ;
[0033] 2) Put the black solid into a tube furnace protected by helium gas, and calcine it at 900℃ for 1h;
[0034] 3) After cooling, take out the black solid and repeatedly rinse with deionized water and 6 mol / L acetic acid solution to obtain the biomass porous carbon material. Its BET test data is shown in Table 1.
Embodiment 3
[0035] Embodiment 3: a kind of method for preparing porous carbon material by humin, specifically comprising the following steps:
[0036] 1) Add humin and potassium permanganate (mass ratio 1:0.2) into a mixed solution of water and ethanol (volume ratio 1:3), stir at room temperature for 16 hours, and dry in an oven at 110°C to obtain a black solid ;
[0037] 2) Put the black solid into a tube furnace protected by helium gas, and calcine it at 900℃ for 2h;
[0038] 3) After cooling, take out the black solid and repeatedly rinse with deionized water and 3 mol / L acetic acid solution to obtain the biomass porous carbon material. Its BET test data is shown in Table 1.
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