A kind of preparation method of mesoporous activated carbon
A technology of mesoporous activated carbon and treatment liquid, which is applied in the direction of chemical instruments and methods, inorganic chemistry, non-metallic elements, etc. It can solve the problems of affecting the adsorption effect, single product structure, and few mesoporous activated carbons, and achieve good performance.
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Embodiment 1
[0018] A preparation method of mesoporous activated carbon includes the following steps:
[0019] Step 1. Immerse 400g wood chips in the treatment solution, heat up to 50°C, stir for 10 minutes, then heat up to 100°C under the vacuum condition of 0.003MPa, let stand for 40 minutes, and drop to room temperature, then add diethyl 20g of methyl toluenediamine, mixed uniformly to obtain material 1, wherein the treatment liquid is a mixture of 600g of 4-chlorobutyric acid, 300g of phthalic anhydride and 1800g of water;
[0020] Step 2: Heat up the material 1 to 600°C under the protection of nitrogen, at a rate of 15°C / min, hold for 150 minutes, and then lower to room temperature to obtain a carbonized material;
[0021] Step three, immerse the carbonized material in an 8% mass concentration of ethylenediamine aqueous solution, raise the temperature to 30°C, keep at a constant temperature for 100 minutes, then filter, wash with deionized water until the pH does not change, dry, and dry at ...
Embodiment 2
[0023] A preparation method of mesoporous activated carbon includes the following steps:
[0024] Step one, immerse 400g wood chips in the treatment solution, heat up to 53°C, stir for 15 minutes, then heat up to 108°C under a vacuum condition of 0.004MPa, let stand for 44 minutes, and drop to room temperature, then add 30g of two Ethyl toluene diamine, mixed uniformly to obtain material 1, wherein the treatment liquid is a mixture of 500 g 4-chlorobutyric acid, 300 g phthalic anhydride and 1600 g water;
[0025] Step 2: Heat up the material 1 to 620°C under nitrogen protection, at a rate of 16°C / min, hold for 160 minutes, and then lower to room temperature to obtain a carbonized material;
[0026] Step three, immerse the carbonized material in an aqueous solution of ethylenediamine with a mass concentration of 9%, raise the temperature to 33°C, keep it at a constant temperature for 106 minutes, then filter, wash with deionized water until the pH does not change, dry, and dry at a te...
Embodiment 3
[0028] A method for preparing mesoporous activated carbon includes the following steps:
[0029] Step 1: Immerse 400g of wood chips in the treatment solution, heat up to 58°C, stir for 16 minutes, then heat up to 112°C under a vacuum of 0.006MPa, let stand for 46 minutes, and drop to room temperature, then add 50g of two Ethyltoluenediamine, mixed uniformly, to obtain material 1, wherein the treatment liquid is a mixture of 600g 4-chlorobutyric acid, 350g phthalic anhydride and 1600g water;
[0030] Step 2: Heat up the material 1 to 640°C under the protection of nitrogen at a rate of 20°C / min, hold for 180 minutes, and then lower to room temperature to obtain a carbonized material;
[0031] Step three, immerse the carbonized material in an aqueous solution of ethylenediamine with a mass concentration of 10%, raise the temperature to 38°C, keep at a constant temperature for 115 minutes, then filter, wash with deionized water until the pH does not change, dry, and dry at a temperature ...
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Abstract
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