A kind of preparation method of high specific surface area multi-level structure melamine
A high specific surface area, melamine technology, applied in chemical instruments and methods, physical/chemical process catalysts, special compound water treatment, etc., can solve the problems of melamine transformation rarely reported, and achieve great application value, cost reduction, and low cost Effect
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Embodiment 1
[0039] A preparation method of high specific surface area multi-level structure melamine, the steps are as follows:
[0040] (1) 20 mL of absolute ethanol was mixed with 1.55 mL of concentrated hydrochloric acid solution with a mass concentration of 36% to obtain a mixed solution, and 2 g of melamine powder was stirred and dispersed in the above mixed solution to obtain a dispersion;
[0041] (2) Stir the dispersion in step (1) at a stirring temperature of 25°C for 2 hours;
[0042] (3) Filtrate the dispersed liquid stirred in step (2) to collect precipitates, wash with absolute ethanol, and dry in a blast drying oven at 60° C. for 12 hours to obtain high specific surface area multi-level structure melamine.
Embodiment 2
[0044] A preparation method of high specific surface area multi-level structure melamine, the steps are as follows:
[0045] (1) 20 mL of glycerin and 0.87 mL of concentrated phosphoric acid solution with a mass concentration of 85% were mixed to obtain a mixed solution, and 2 g of melamine powder was stirred and dispersed in the above mixed solution to obtain a dispersion;
[0046] (2) Stir the dispersion in step (1) at a stirring temperature of 70° C. for 5 hours;
[0047](3) Filter the dispersed liquid stirred in step (2) to collect precipitates, wash with absolute ethanol, and dry in a blast drying oven at 70° C. for 10 hours to obtain high specific surface area multi-level structure melamine.
Embodiment 3
[0049] A preparation method of high specific surface area multi-level structure melamine, the steps are as follows:
[0050] (1) Mix 20 mL of ethylene glycol with 10 mL of nitric acid solution (3.2 mL of 69% concentrated nitric acid added to 6.8 mL of water) to obtain a mixed solution, stir and disperse 2 g of melamine powder in the above mixed solution to obtain a dispersion;
[0051] (2) Stir the dispersion in step (1) at a stirring temperature of 30°C for 17 hours;
[0052] (3) Filtrate the dispersed liquid stirred in step (2) to collect precipitates, wash with absolute ethanol, and dry in a blast drying oven at 90° C. for 6 hours to obtain multi-level structure melamine with high specific surface area.
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