Preparation method of high-mesoporous-ratio composite core-shell structure multiphase nickel-loaded activated carbon material
A core-shell structure and composite technology, applied in chemical instruments and methods, electrodes, metal/metal oxide/metal hydroxide catalysts, etc., can solve the difficulty of preparing activated carbon catalysts with stable and efficient performance and the difficulty of raw material pretreatment Large, serious environmental pollution and other problems, to achieve the effect of good dispersion, large specific surface area, and a wide range of carbon sources
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Embodiment 1
[0017] a. Poly(4-styrenesulfonic acid-co-maleic acid) sodium salt, NiCl 2 solution, NH 4 The OH solution was put into an oil bath at 200 degrees Celsius in an oil bath at a mass ratio of 1:0.01:1 and then taken out and dried for 2 hours to obtain the precursor I. The concentration of NiCl2 solution is 130g / L, and the concentration of NH4OH solution is 525g / L.
[0018] b. The precursor I was dried and placed in a tube furnace, and pyrolyzed under a nitrogen atmosphere of 800 degrees Celsius for 40 minutes to obtain and take out the precursor II; the flow rate of nitrogen was 300 mL / min; the heating rate of the tube furnace was 50°C / min.
[0019] c. Disperse the precursor II into the aqueous solution, then add NaOH solid, stir for 36 hours, filter and dry to obtain the product; the mass ratio of precursor II, aqueous solution, and NaOH solid is 1:20:10.
[0020] d. Finally, put the product into a Soxhlet extractor and wash for three days until the product washing liquid is ne...
Embodiment 2
[0023] a. Poly(4-styrenesulfonic acid-co-maleic acid) sodium salt, NiCl 2 solution, NH 4 The OH solution was put into an oil bath at 200 degrees Celsius in an oil bath at a mass ratio of 1:0.1:2 for 6 hours, taken out and dried to obtain the precursor I. The concentration of NiCl2 solution is 130g / L, and the concentration of NH4OH solution is 525g / L.
[0024] b. The precursor I was placed in a tube furnace, and pyrolyzed for 120 minutes in a nitrogen atmosphere at 1000 degrees Celsius to obtain and take out the precursor II; the flow rate of nitrogen was 300 mL / min; the heating rate of the tube furnace was 50 °C / min.
[0025] c. Disperse the precursor II into the aqueous solution, then add the NaOH solid, stir for 36 hours, filter and dry to obtain the product; the mass ratio of the precursor II, the aqueous solution and the NaOH solid is 1:20:20;
[0026] d. Finally, put the product into a Soxhlet extractor and wash for three days until the sample washing liquid is neutra...
Embodiment 3
[0029] a. Poly(4-styrenesulfonic acid-co-maleic acid) sodium salt, NiCl 2 solution, NH 4 The OH solution was put into an oil bath at 200 degrees Celsius in an oil bath at a mass ratio of 1:0.05:1 for 4 hours, taken out and dried to obtain the precursor I. The concentration of NiCl2 solution is 130g / L, and the concentration of NH4OH solution is 525g / L.
[0030] b. The precursor I was placed in a tube furnace, and pyrolyzed for 40 minutes under a nitrogen atmosphere at 900 degrees Celsius to obtain and take out the precursor II; the flow rate of nitrogen was 300 mL / min; the heating rate of the tube furnace was 50 °C / min.
[0031] c. Disperse the precursor II into the aqueous solution, then add the NaOH solid, stir for 36 hours, filter and dry to obtain the product; the mass ratio of the precursor II, the aqueous solution and the NaOH solid is 1:20:20;
[0032] d. Finally, put the product into a Soxhlet extractor and wash for three days until the sample washing liquid is neut...
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