Preparation method and application of a phosphorus-doped biomass hierarchical porous carbon material
A technology of biomass materials and hierarchical pore carbon, which is applied in the preparation/purification of carbon, chemical instruments and methods, and other chemical processes. Achieve the effect of large pore volume, high specific surface area and simple process
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Embodiment 1
[0036](1) Dissolve 8.88g of calcium phytate organic salt template in 100ml of deionized water to prepare a 0.1mol / L solution for use;
[0037] (2) Wash the banana peel with deionized water, put it in a freeze dryer and freeze-dry it for 2 days, then put the freeze-dried banana peel into a pulverizer to pulverize it, and sieve it to 200 mesh to obtain dry banana peel powder;
[0038] (3) Based on the mass ratio of banana peel dry powder and calcium phytate as 1:1, take 17.76g of banana peel dry powder and soak in 20ml of 0.1mol / L calcium phytate solution for 20 hours, and dry at 110°C for 6 hours;
[0039] (4) Put the impregnated dried banana peel powder into a tube furnace, and under the protection of an inert gas, raise the temperature to 800°C at a rate of 5°C / min and keep it warm for 2 hours to obtain a carbonized product;
[0040] (5) The obtained carbonized product was first boiled with 1mol / L hydrochloric acid for 2 hours, washed with deionized water until neutral, then ...
Embodiment 2
[0044] (1) Dissolve 79.2g of magnesium phytate organic salt template in 40ml of deionized water to prepare a 2.5mol / L solution for use;
[0045] (2) Wash the sawdust with deionized water, dry it in an oven at 60°C for 20 hours, put the dried sawdust into a grinder, and sieve it to 100 mesh to obtain dry sawdust powder;
[0046] (3) Based on the mass ratio of dry sawdust to magnesium phytate as 1:6, take 9.9g of dry sawdust and soak in 30ml of 2.5mol / L magnesium phytate solution for 16 hours, and dry at 180°C for 2 hours;
[0047] (4) Put the impregnated sawdust dry powder into a tube furnace, and under the protection of inert gas, continue to raise the temperature to 500°C at a rate of 15°C / min, keep it warm for 5h, and obtain the carbonized product ( figure 1 );
[0048] (5) The obtained carbonized product was boiled with 3mol / L phosphoric acid for 3 hours, washed with deionized water until neutral, then boiled with deionized water for 3 hours, filtered and dried in a vacuum...
Embodiment 3
[0052] (1) Dissolve 155.7g of zinc phytate organic salt template in 30ml of deionized water to make a 5mol / L solution for use;
[0053] (2) Wash the pomelo peel with deionized water, dry it in an oven at 80°C for 17 hours, put the dried pomelo peel into a pulverizer, and sieve it to 10 mesh to obtain dry pomelo peel powder;
[0054] (3) According to the mass ratio of pomelo peel and zinc phytate as 1:10, take 10.4g of pomelo peel dry powder and soak in 20ml 5mol / L zinc phytate solution for 10 hours, and dry at 130°C for 6h;
[0055] (4) Put the impregnated pomelo peel dry powder into a tube furnace, and under the protection of inert gas, heat up to 1000°C at a rate of 10°C / min, keep it warm for 3 hours, and obtain a carbonized product;
[0056] (5) The obtained carbonized product was first boiled with 2mol / L nitric acid for 4 hours, washed with deionized water until neutral, then boiled with deionized water for 4 hours, filtered and dried in a blast drying oven at 90°C for 14 ...
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