A kind of trivalent iron modified mesoporous carbon and its preparation method and application
A technology of mesoporous carbon and ferric iron, which is applied in the field of materials, can solve the problems of reduced anti-wear strength of activated carbon, affecting the removal rate of sulfides, and unsatisfactory removal effect, and achieves difficult to block pores, fast adsorption rate, and large ratio. Effects of Surface Area and Pore Volume
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Embodiment 1
[0031] This embodiment provides a ferric iron modified mesoporous carbon, such as figure 1 Shown is the SEM image of the ferric-modified mesoporous carbon, which uses ordered mesoporous carbon as a carrier, and ferric iron is loaded on the surface and pores of the ordered mesoporous carbon by impregnation. The trivalent iron modified mesoporous carbon.
[0032] Wherein, the specific surface area of the ordered mesoporous carbon is 600m 2 / g, pore diameter is 2.7nm, and described ordered mesoporous carbon adopts following method to prepare:
[0033] (S1) Add a sodium hydroxide solution with a concentration of 15wt% to phenol and control the molar ratio of phenol to sodium hydroxide to be 8:1, carry out a reflux reaction at 40°C for 15min, then raise the temperature to 48°C and add a concentration of 37wt% Continue to heat the formaldehyde solution to 68°C and keep it for 1.2h, then lower it to room temperature, adjust the pH of the obtained solution system to 6.8 with 0.5mo...
Embodiment 2
[0042] This example provides a ferric-modified mesoporous carbon, using ordered mesoporous carbon as a carrier, and ferric iron is loaded on the surface and pores of the ordered mesoporous carbon by impregnation to obtain the trivalent iron. Iron-modified mesoporous carbon.
[0043] Wherein, the specific surface area of the ordered mesoporous carbon is 1000m 2 / g, pore diameter is 7.5nm, and described ordered mesoporous carbon adopts following method to prepare:
[0044] (S1) Add a sodium hydroxide solution with a concentration of 25wt% to phenol and control the molar ratio of phenol to sodium hydroxide to 12:1, carry out a reflux reaction at 42°C for 10min, then raise the temperature to 52°C and add a concentration of 40wt% Continue to heat the formaldehyde solution to 72°C and keep it for 1h, then lower it to room temperature, adjust the pH of the obtained solution system to 7.0 with 0.8mol / L hydrochloric acid, and then evaporate the water to obtain the phenolic resin;
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Embodiment 3
[0053] This example provides a ferric-modified mesoporous carbon, using ordered mesoporous carbon as a carrier, and ferric iron is loaded on the surface and pores of the ordered mesoporous carbon by impregnation to obtain the trivalent iron. Iron-modified mesoporous carbon.
[0054] Wherein, the specific surface area of the ordered mesoporous carbon is 800m 2 / g, pore diameter is 6nm, and described ordered mesoporous carbon adopts following method to prepare:
[0055] (S1) Add a sodium hydroxide solution with a concentration of 20wt% to phenol and control the molar ratio of phenol to sodium hydroxide to be 10:1, carry out a reflux reaction for 12 minutes under the condition of a water bath at 41°C, then raise the temperature to 50°C and add a concentration of It is a 38wt% formaldehyde solution, the molar ratio of formaldehyde to phenol is 2:1, continue heating to 70°C and keep it down to room temperature for 1h to obtain a solution system; the solution system is adjusted t...
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Abstract
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