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Method for preparing porous carbon material from waste corrugated paper fibers and use of porous carbon material

A technology of porous carbon materials and waste corrugated paper, applied in chemical instruments and methods, carbon compounds, inorganic chemistry, etc., can solve the problems of long activation time, corrosion of equipment, pollution of the environment, etc., and achieve good application prospects, high carbon content, The effect of simple ingredients

Inactive Publication Date: 2019-06-07
XIAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the physical activation method has long activation time, high activation temperature, small pore structure of the prepared activated carbon, and poor adsorption performance of the prepared porous carbon.
The chemical activation method mainly uses phosphoric acid or phosphate as the activator, and the modified method will eventually generate mesopores, and there are disadvantages such as high cost of the activator, corrosion of equipment, pollution of the environment, and residual activators in the product.

Method used

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  • Method for preparing porous carbon material from waste corrugated paper fibers and use of porous carbon material
  • Method for preparing porous carbon material from waste corrugated paper fibers and use of porous carbon material
  • Method for preparing porous carbon material from waste corrugated paper fibers and use of porous carbon material

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Dissolve 2g of corrugated paper fiber that has been pulped by a beater and dried in 100ml of a mixed solution of sodium hydroxide and potassium hydroxide with a concentration of 0.03g / ml, then soak and stir the solution at 40°C for 3h, and place it in an oven after soaking 6h, the temperature was set at 110°C; finally, the treated fiber was placed in a tube furnace for carbonization, the carbonization temperature was 1000°C, the heating rate was 10°C / min, and kept for 1h, after taking it out, it was washed and neutralized, and then Drying, the drying temperature is 100°C, and the drying time is 6h; the porous carbon material is obtained after carbonization, and its scanning electron microscope picture is as follows figure 1 As shown, the pores distributed on the surface can be clearly seen and the pore diameter is around nanometers.

Embodiment 2

[0035] Dissolve 5g of corrugated fiber in 100ml of a mixed solution of sodium hydroxide and potassium hydroxide with a concentration of 0.05g / ml, then soak and stir the solution at 60°C for 1h, then place it in an oven for 12h after soaking, and set the temperature at 70°C ; Finally, place the treated fiber in a tube furnace for carbonization, the carbonization temperature is 500°C, the heating rate is 5°C / min, and keep warm for 3h, take it out, wash and neutralize it, and then dry it at 70°C ℃, drying time 3h; porous carbon material is obtained after carbonization. Its scanning electron microscope picture is as figure 2 As shown, the pores distributed on the surface can be clearly seen and the pore diameter is around nanometers.

Embodiment 3

[0037] Dissolve 3g of corrugated fiber in 100ml of a mixed solution of sodium hydroxide and potassium hydroxide with a concentration of 0.04g / ml, then soak and stir the solution at 50°C for 2h, then place it in an oven for 9h after soaking, and set the temperature to 100°C ; Finally, place the treated fiber in a tube furnace for carbonization, the carbonization temperature is 800°C, the heating rate is 8°C / min, and keep it warm for 2h, take it out, wash and neutralize it, and then dry it at 90°C ℃, drying time 5h; porous carbon material is obtained after carbonization. Its scanning electron microscope picture is as image 3 As shown, the pores distributed on the surface can be clearly seen and the pore diameter is around nanometers.

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Abstract

A method for preparing a porous carbon material from waste corrugated paper fibers comprises the following steps: step 1, dividing a waste corrugated paper box into small pieces and soaking the smallpieces in an aqueous solution, then feeding the soaked paper pieces into a beater for pulping, and then taking out the paper pulp for drying; step 2, activating the paper fibers treated in the step 1by using a strong alkali solution; step 3, drying the paper fibers treated in the step 2 to obtain activated paper fibers; and step 4, carbonizing the activated paper fibers from the step 3, and finally carrying out washing, neutralizing and drying to obtain the porous carbon material. The method for preparing the porous carbon material from waste corrugated paper fibers has the characteristics ofsimple operation, high efficiency, and ease of implementation.

Description

technical field [0001] The invention belongs to the technical field of material preparation, and in particular relates to a method and application for preparing a porous carbon material by using waste corrugated fiber as a raw material. Background technique [0002] Biochar can be obtained from a variety of pyrolytic carbon materials in anoxic environments. It has the advantages of good stability, rich source of raw materials, low cost, easy recycling, strong adsorption capacity, unique electrochemical performance, etc., and is considered to be a new type of ecological material with high potential. In view of the high carbon content and porous characteristics of biochar, it can improve the water storage capacity of the soil, and can also establish a protective channel for microorganisms in the soil, and can better absorb CO 2 , and ultimately achieve the effect of increasing crop yield. In addition, in recent years, it has been paid more and more attention as an adsorbent ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/324C01B32/348B01J20/20C02F1/28
Inventor 方长青曾汇琳宿健杨曼楠吴霖林李欢
Owner XIAN UNIV OF TECH
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