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Preparation method of nitrogen-doped hierarchical pore carbon material

A multi-level porous, carbon material technology, applied in chemical instruments and methods, carbon compounds, inorganic chemistry, etc., can solve problems such as increasing the preparation cost, and achieve the effects of low cost, simple method and high economic benefits

Pending Publication Date: 2020-08-14
伊犁师范大学
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The prepared nitrogen and oxygen co-doped porous carbon material has a particle size of 0.5-30 μm, a mesopore size of 20-500 nm, a nitrogen and oxygen doping amount of 5-25%, and a removal rate of rose bengal, nickel ions, and suspended impurities Up to 99%, but the removal of nano-oxide templates requires the use of hazardous chemicals, which increases the cost of preparation

Method used

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  • Preparation method of nitrogen-doped hierarchical pore carbon material
  • Preparation method of nitrogen-doped hierarchical pore carbon material
  • Preparation method of nitrogen-doped hierarchical pore carbon material

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preparation example Construction

[0029] Such as figure 1 Shown, a kind of preparation method of nitrogen doped hierarchical porous carbon material, comprises the following steps:

[0030] (1) After the organic solid waste is pickled, it is dried;

[0031] (2) The organic solid waste obtained in step (1) is fully mixed with an activator and a nitrogen source in a mass ratio of 1:(1-3):(1-3), and then ground and dried after mixing;

[0032] (3) The product of step (2) is transferred to a porcelain boat, and placed in a tube furnace for heat preservation;

[0033] (4) After the product of step (3) is acid-washed again, it is dried to constant weight to obtain a nitrogen-doped hierarchical porous carbon material.

[0034] Preferably, the organic solid waste is one or a combination of lavender residue and straw.

[0035] Preferably, the activator includes potassium hydroxide, potassium carbonate, one or more of potassium bicarbonate, and the nitrogen source includes one of urea, melamine, dicyandiamide, oleylam...

Embodiment 1

[0044] (1) Take by weighing 100g of lavender residues, wash with deionized water to neutrality after washing several times with nitric acid, and dry for subsequent use;

[0045] (2) Mix the lavender residue with potassium hydroxide and urea in a weight ratio of 1:1:1, and fully grind for 0.5h; keep the obtained solid mixture in an oven at 100°C for 5h;

[0046] (3) Transfer the solid obtained in step (3) to a porcelain boat, place it in a tube furnace filled with nitrogen, slowly raise the temperature to the target temperature of 800° C., and keep it warm for 3 hours;

[0047] (4) The product obtained in step (3) was washed again with nitric acid and deionized water to neutrality, and dried in a vacuum oven at 80° C. to constant weight to obtain a nitrogen-doped hierarchical porous carbon material.

Embodiment 2

[0049] In parts by weight, lavender residue was mixed with potassium hydroxide and urea in a weight ratio of 1:1:2, and fully ground for 0.5 h; other conditions were the same as in Example 1.

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Abstract

The invention discloses a preparation method of a nitrogen-doped hierarchical pore carbon material, and the method comprises the following steps: (1) carrying out acid pickling treatment on organic solid wastes, and drying for later use; (2) fully mixing the organic solid wastes obtained in the step (1) with an activating agent and a nitrogen source according to the mass ratio of 1: (1-3): (1-3),and grinding and drying after mixing; (3) transferring a product obtained in the step (2) into a porcelain boat, and putting the porcelain boat into a tubular furnace for heat preservation treatment;and (4) carrying out acid washing treatment on the product obtained in the step (3) again, and drying to constant weight to obtain the nitrogen-doped hierarchical pore carbon material. According to the method, the graded porous carbon material is prepared from the organic solid wastes, the method is simple, low in cost and easy to operate, waste residues are turned into wealth, and the method hashigh economic benefits and remarkable social benefits; according to the carbon material prepared by the method, the porosity and the specific surface area of the material are increased, active adsorption sites are increased, pollutants in environmental wastewater can be effectively removed, and resource utilization is realized.

Description

technical field [0001] The invention relates to the field of resource utilization of organic solid waste, in particular to a preparation method of a nitrogen-doped hierarchical porous carbon material and an application of the nitrogen-doped hierarchical porous carbon material. Background technique [0002] With the acceleration of the industrialization process, the accumulation of various organic solid wastes, such as: plant straw, lavender residue, municipal sludge, etc. is also increasing. It not only occupies land resources but also pollutes the environment. The waste gas produced by long-term accumulation and fermentation permeates the air and seriously affects people's lives. The traditional treatment methods are mainly incineration, landfill and digestion treatment. When the temperature rises to 1000°C, the conversion of nitrogen oxides in the material is also greatly improved, and the flue gas contains chlorine-containing substances such as dioxin and hydrochloric ac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/324C01B32/348C02F1/28
CPCC01B32/324C01B32/348C02F1/283
Inventor 闫秀玲武晋雄吴雨鑫安瑜刘天宝
Owner 伊犁师范大学