A kind of high specific surface melamine silkworm sand composite carbon material and its preparation method and application
A melamine silkworm, high specific surface technology, applied in chemical instruments and methods, other chemical processes, alkali metal compounds, etc., can solve the problems of non-target biological damage to the environment, excessive pesticide residues in agricultural products, and low pesticide utilization efficiency, etc. The effect of grafting reaction speed, reducing waste liquid discharge and improving efficiency
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Embodiment 1
[0030] A preparation method of a high specific surface melamine silkworm excrement composite material, comprising the following steps,
[0031] (1) in N 2 In the atmosphere, 10.0 g of raw silkworm excrement was raised to 500°C at a heating rate of 5°C / min, kept at 500°C for more than 5.0 hours, and then cooled to room temperature to prepare carbonized silkworm excrement.
[0032] (2) 0.25g of melamine powder and 0.25g of carbonized silkworm excrement are placed in a ball mill jar, and 1.0mL of ZnCl with a mass concentration of 0.25g / L is added 2 solution; the ball mill jar is sealed and placed in a high-speed mechanical oscillating ball mill to oscillate, the rotating speed is 1000 rpm, and the grafting reaction time is 60min (normal pressure sealing is carried out in the reaction process); the obtained melamine / ZnCl 2 / Silkworm excrement composite slurry is directly dried at 80°C to obtain crude composite material;
[0033] (3) the obtained composite material crude product ...
Embodiment 2
[0035] (1) in N 2 In the atmosphere, 10.0 g of raw silkworm excrement was raised to 600°C at a heating rate of 5°C / min, kept at 600°C for more than 4.0 hours, and then cooled to room temperature to prepare carbonized silkworm excrement.
[0036] (2) 0.25g of melamine powder and 0.5g of carbonized silkworm excrement are placed in a ball mill jar, and 3.0mL of ZnCl with a mass concentration of 0.30g / L is added 2 solution; the ball mill jar is sealed and placed in a high-speed mechanical oscillating ball mill to oscillate, the rotating speed is 1050 rpm, and the grafting reaction time is 50min (normal pressure sealing is carried out in the reaction process); the obtained melamine / ZnCl 2 / Silkworm excrement composite slurry was directly dried at 80°C to obtain crude composite material.
[0037] (3) the obtained composite material crude product in step (2) in N 2 In the atmosphere, the temperature was raised to 550°C at a rate of 5°C / min, and kept at 550°C for 4.0 hours. After th...
Embodiment 3
[0039] (1) in N 2 In the atmosphere, 10.0g of raw silkworm excrement was raised to 700°C at a heating rate of 5°C / min, kept at 600°C for more than 3.0h, and then cooled to room temperature to prepare carbonized silkworm excrement.
[0040] (2) 0.25g of melamine powder and 0.75g of carbonized silkworm excrement are placed in a ball mill jar, and 5.5mL of ZnCl with a mass concentration of 0.25g / L is added 2 solution; the ball mill jar is sealed and placed in a high-speed mechanical oscillating ball mill to oscillate, the rotating speed is 1100 rev / min, and the grafting reaction time is 45min (normal pressure sealing is carried out in the reaction process); the obtained melamine / ZnCl 2 / Silkworm excrement composite slurry was directly dried at 90°C to obtain crude composite material.
[0041] (3) the obtained composite material crude product in step (2) in N 2 In the atmosphere, the temperature was raised to 600°C at a rate of 5°C / min, and kept at 600°C for 3.0 hours. After coo...
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