A kind of free radical induced controllable microspherical activated carbon and its preparation method
A technology of activated carbon and free radicals, used in chemical instruments and methods, carbon compounds, other chemical processes, etc., can solve the problems of low reaction concentration, high reaction temperature, and low yield.
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[0034] The preparation method provided by the invention is mainly realized by the following technical solutions:
[0035] (1) prepare active carbon precursor material;
[0036] Mixing water-soluble carbohydrates, free radical initiating catalysts and inducing nucleation catalysts to obtain a mixed solution, heating the mixed solution to 100°C-220°C and then keeping it warm, and reacting the mixed solution at this temperature to prepare activated carbon precursor materials. The concentration of the free radical initiating catalyst in the mixed solution prepared by the carbon sphere precursor material is 0.005mol / l-0.05mol / l, preferably 0.01mol / l-0.03mol / l, and the concentration range ensures that the nucleation precursor can be induced Controlled speed growth, to avoid too fast in the early stage of the reaction, and uneven particle size distribution in the late stage of the reaction. The concentration of the induced nucleation catalyst in the mixed solution prepared by the ca...
Embodiment 1
[0048] The invention provides a free radical induction controllable microspherical super activated carbon preparation material including glucose, a free radical initiation catalyst, an induced nucleation catalyst and potassium hydroxide. Wherein the concentration of glucose is 1.8 mol / l, and the usage amount of free radical initiating catalyst and inducing nucleation catalyst is implemented according to the data in Table 1.
[0049] The preparation method provided by the invention is mainly realized by the following technical solutions:
[0050] (1) prepare active carbon precursor material;
[0051] The 32.4 g of glucose, the free radical initiating catalyst and the inducing nucleation catalyst were mixed to prepare 100 ml of a mixed solution, and the mixed solution was added into a stainless steel reaction vessel with a polytetrafluoroethylene liner. The stainless steel reactor was heated at 150°C for 5.5h. After the heating reaction, the stainless steel reactor was cooled ...
Embodiment 2
[0064] The invention provides a preparation material of free radical induced controllable microspherical super active carbon, which comprises carbohydrate, N-hydroxyphthalimide, maleic anhydride and potassium hydroxide. Wherein, the concentration of N-hydroxyphthalamide is 0.025 mol / l, the concentration of maleic anhydride is 0.1 mol / l, and the type, concentration and reaction temperature of carbohydrates are implemented according to the data in Table 3.
[0065] The preparation method provided by the invention is mainly realized by the following technical solutions:
[0066] (1) prepare active carbon precursor material;
[0067] Carbohydrates, 0.41g N-hydroxyphthalamide (concentration is 0.025mol / l), 0.1g maleic anhydride (concentration is 0.1mol / l) are mixed to configure 100ml of mixed solution, and mixed solution is added with Teflon-lined stainless steel reaction vessel. The reaction conditions therein were implemented according to the data in Table 3. After the heating...
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