Semi-coke-based activated carbon adsorption material and preparation method and use thereof
A technology based on activation and carbon adsorption, which is applied in the direction of separation methods, chemical instruments and methods, and other chemical processes, can solve the problems of difficult hole expansion, application limitations of semi-coke-based activated carbon materials, and imperfect processes, etc., and achieve economical Significant benefits, less heat of adsorption, and low cost
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[0023] The preparation method of semi-coke-based activated carbon adsorption material according to the second aspect of the present invention, for preparing the semi-coke-based activated carbon adsorption material of the first aspect of the present invention, includes: step 1, providing semi-coke powder; The coke powder is added to the potassium hydroxide solution, and the sample is obtained by dipping at room temperature. The sample is dried and sealed to obtain the impregnated semi-coke. The activated semi-coke-based activated carbon adsorption material is dried in a vacuum and stored in a sealed manner.
[0024] In the preparation method of the semi-coke-based activated carbon adsorption material according to the second aspect of the present invention, in step 1, the particle size of the semi-coke powder is 60 meshes.
[0025] In the preparation method of semi-coke-based activated carbon adsorption material according to the second aspect of the present invention, in step 2,...
Embodiment 1
[0037] Step 1: Take the semi-coke raw material and grind it in a ball mill for 8 hours to obtain 60 mesh semi-coke powder.
[0038] Step 2: Add 20 g of ground 60-mesh semi-coke powder into 20 mL of 1 mmol / L KOH solution and soak for 6 hours at room temperature, then dry the obtained sample at 60° C. and store in a sealed container.
[0039] Step 3: Take 10g of the impregnated semi-coke material, control the activation temperature to be 700°C, the heating time to be 40min, the activation time to be 120min, and the flow rate of the activator to be 60mL / min. After activation, the activated carbon is vacuum-dried at 120°C and sealed for storage. , the activator is CO 2 gas.
Embodiment 2-27
[0041] The semi-coke-based activated carbon adsorption material was prepared by the method of Example 1, wherein the parameter settings in the preparation process are listed in Table 1.
[0042] In addition, the drying temperature in the second step is 60° C., the heating time in the third step is 40 min, and the vacuum drying temperature is 120° C.
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