Method for preparing high-performance biomass activated carbon fibers
A technology of activated carbon fiber and biomass, applied in chemical instruments and methods, carbon compounds, inorganic chemistry, etc., can solve problems such as limited application fields of activated carbon fiber, and achieve simple and convenient recovery and regeneration, simple and clear preparation process, and low preparation cost. Effect
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Embodiment 1
[0034] A preparation method of high-performance biomass activated carbon fiber, it comprises the steps:
[0035] 1) Pretreatment: Soak the cylindrical loofah in 2% sodium hydroxide aqueous solution for 24 hours (to remove surface wax, ash and other small molecules), then filter the solution, wash the loofah repeatedly until neutral, and finally Put the loofah into an oven and dry at 105°C for 12 hours to obtain a cylindrical alkali-treated dry loofah;
[0036] 2) Modification: Take out the above alkali-treated dry loofah from the oven, put it into a beaker, add water-soluble phenolic resin with a solid content of 35% into the beaker, fully immerse it, and immerse it for more than 24 hours. The impregnated loofah Place in an oven and dry at 105°C for 12 hours;
[0037] 3) Charcoal activation: put the impregnated loofah into a high-temperature resistance furnace, pre-oxidize it at 200°C for 2 hours, then put it into a high-temperature resistance furnace for carbonization activa...
Embodiment 2
[0046] A preparation method of high-performance biomass activated carbon fiber, it comprises the steps:
[0047] 1) Pretreatment: Soak the cylindrical loofah in 2% sodium hydroxide aqueous solution for 24 hours (to remove surface wax, ash and other small molecules), then filter the solution, wash the loofah repeatedly until neutral, and finally Put the loofah into an oven and dry at 105°C for 12 hours to obtain a cylindrical alkali-treated dry loofah;
[0048] 2) Modification: Take out the above alkali-treated dry loofah from the oven, put it into a beaker, add water-soluble phenolic resin with a solid content of 35% into the beaker, fully immerse it, and immerse it for more than 24 hours. The impregnated loofah Place in an oven and dry at 105°C for 12 hours;
[0049] 3) Charcoal activation: put the impregnated loofah into a high-temperature resistance furnace, pre-oxidize it at 200°C for 2 hours, then put it into a high-temperature resistance furnace for carbonization activa...
Embodiment 3
[0054] A preparation method of high-performance biomass activated carbon fiber, it comprises the steps:
[0055] 1) Pretreatment: Soak the cylindrical loofah in 2% sodium hydroxide aqueous solution for 24 hours (to remove surface wax, ash and other small molecules), then filter the solution, wash the loofah repeatedly until neutral, and finally Put the loofah into an oven and dry at 105°C for 12 hours to obtain a cylindrical alkali-treated dry loofah;
[0056] 2) Impregnation: Take out the above alkali-treated dry loofah from the oven, put it into a beaker, add water-soluble phenolic resin with a solid content of 35% into the beaker, fully immerse, and soak for more than 24 hours. Dry in an oven at 105°C for 12 hours;
[0057] 3) Charcoal activation: put the impregnated loofah into a high-temperature resistance furnace, pre-oxidize it at 200°C for 2 hours, then put it into a high-temperature resistance furnace for carbonization activation, and pass protective gas N into the h...
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