Method for preparing wheat straw-based activated carbon
A technology based on wheat straw and activated carbon, which is applied in chemical instruments and methods, inorganic chemistry, non-metallic elements, etc., can solve the problems of environmental pollution, large consumption of activators, and low activation efficiency, so as to create economic benefits and promote Activation effect, environmental protection effect
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preparation example Construction
[0024] The preparation method of the wheat straw-based activated carbon of the present invention mainly consists of two steps. In the first step, the wheat straw is cut into sections, concentrated hydrochloric acid is fully mixed with the sectioned wheat straw, and after a period of time to remove the ash in the straw, it is washed with deionized water and dried at high temperature. The second step is to fully grind the obtained material with a mortar after airing to room temperature, put the ground material into a stainless steel reactor and seal it, and heat the reactor to a certain temperature according to a certain heating rate and keep it at this temperature for a period of time. After a period of time, the wheat straw-based activated carbon was prepared by using the pyrolysis self-activation method, and the obtained material was left to air to room temperature, and the prepared wheat straw-based activated carbon was obtained.
[0025] Cut wheat stalks into 1cm segments, ...
example 1
[0036] The preparation method of wheat straw-based activated carbon comprises the following steps,
[0037] 1. Cut the dry wheat straw into 1cm segments.
[0038] 2. Get concentration and pour 90ml of concentrated hydrochloric acid of 37% into the conical flask, weigh 2g of segmental wheat straw and pour it into the hydrochloric acid, and seal the conical flask completely.
[0039] 3. Using a water bath heating method, heat the concentrated hydrochloric acid to 45°C and keep it for 55min.
[0040] 4. Filter the obtained product with a filter screen, rinse it repeatedly with deionized water, then place it in a high-temperature drying oven, and dry it at a high temperature of 100°C for 10 minutes.
[0041] 5. Fully grind the product in the previous step with a mortar until the particle size is less than 1mm.
[0042] 6. Put the ground product in a high-pressure reactor (note that the volume of the product should not exceed 1 / 3 of the volume of the reactor), heat it to 800°C at...
example 2
[0045] The preparation method of wheat straw-based activated carbon comprises the following steps,
[0046] 1. Cut the dry wheat straw into 1.1cm sections.
[0047] 2. Get concentration and be that 95ml of concentrated hydrochloric acid of 37% is poured in the conical flask, the segmented wheat straw of taking 2g is poured in the hydrochloric acid, and the conical flask is sealed completely.
[0048] 3. Using a water bath heating method, heat the concentrated hydrochloric acid to 48°C and keep it for 58min.
[0049] 4. Filter the obtained product with a filter screen, rinse it repeatedly with deionized water, then place it in a high-temperature drying oven, and dry it at a high temperature of 105°C for 11 minutes.
[0050] 5. Fully grind the product in the previous step with a mortar until the particle size is less than 1mm.
[0051] 6. Place the ground product in a high-pressure reactor (note that the volume of the product should not exceed 1 / 3 of the volume of the reactor)...
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