Method for preparing activated carbon material with humic acid as raw material and application of activated carbon material

A technology for preparing activated carbon and humic acid, applied in chemical instruments and methods, other chemical processes, inorganic chemistry, etc., can solve problems such as difficulty in ensuring the reproducibility of activated carbon, shrinkage of wood and charcoal sources, and limitation of activated carbon raw materials, etc. The effect of low cost, large reserves and easy operation

Inactive Publication Date: 2014-03-19
XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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  • Application Information

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Problems solved by technology

Traditional activated carbon preparation mostly uses wood, charcoal, and coal as raw materials. With the enhancement of social environmental protection awareness, especially the catastrophic floods that occurred in the Yangtze River, Songhua River, and Nen River basins in 1998, people have realized the impact of ecological environment deterioration. The huge negative impact on national survival and sustainable development, the country quickly implemented a b

Method used

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  • Method for preparing activated carbon material with humic acid as raw material and application of activated carbon material
  • Method for preparing activated carbon material with humic acid as raw material and application of activated carbon material
  • Method for preparing activated carbon material with humic acid as raw material and application of activated carbon material

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Experimental program
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Effect test

Embodiment 1

[0028] Mix the humic acid and the activator potassium hydroxide uniformly in a mass ratio of 1:3, then transfer to a high-temperature furnace, and react at a temperature of 800°C for 1 hour under the protection of an inert atmosphere of nitrogen;

[0029] Then cool, wash with 2M dilute hydrochloric acid solution until the pH value is 6-7, and dry to obtain humic acid porous activated carbon material;

[0030] Utilize scanning electron microscope, transmission electron microscope, infrared, elemental analyzer, carry out the characterization result of physicochemical property to obtained humic acid porous activated carbon material see figure 1 , figure 2 and image 3 , carried out adsorption test and supercapacitor test on the obtained humic acid porous activated carbon material, the results are shown in Figure 4 and Figure 5 ;

[0031] figure 1 , figure 2 and image 3 The results show that the obtained humic acid porous activated carbon material has a specific surfac...

Embodiment 2

[0033] Mix humic acid and zinc chloride uniformly in a mass ratio of 1:4, transfer to a high-temperature furnace, and react at a temperature of 500°C for 2 hours under the protection of an inert atmosphere of nitrogen;

[0034] Then cool, wash with 2M dilute hydrochloric acid solution until the pH value is 6-7, and dry to obtain humic acid porous activated carbon material;

[0035] The specific surface area of ​​humic acid porous activated carbon material obtained by nitrogen adsorption and desorption analysis and elemental analyzer detection is 1020m 2 g -1 , the pore size is mainly micro-mesopores smaller than 2-6nm; the mass percentage of elemental analysis is carbon 78.1%, oxygen 13%, nitrogen 0.9%. The adsorption iodine value is 800mg / g, the adsorption methylene blue value is 300mg / g, and the supercapacitor test result is 110Fg -1 .

Embodiment 3

[0037] Mix humic acid and sodium hydroxide evenly in a mass ratio of 1:4, transfer to a high-temperature furnace, and react at 600°C for 3 hours under the protection of an inert atmosphere of nitrogen;

[0038] Then cool, wash with 2M dilute nitric acid solution until the pH value is 6-7, and dry to obtain humic acid porous activated carbon material;

[0039] The specific surface area of ​​humic acid porous activated carbon material obtained by nitrogen adsorption and desorption analysis and elemental analyzer detection is 2000m 2g -1 , the pore size is mainly micro-mesoporous; the mass percentage of elemental analysis is carbon 90.3%, oxygen 4.7%, nitrogen 0.4%; the adsorption iodine value is 1300mg / g, the adsorption methylene blue value is 400mg / g, and the supercapacitor test result is 210Fg -1 .

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Abstract

The invention relates to a method for preparing activated carbon with humic acid as a raw material and an application of the activated carbon. The method comprises the steps of mixing industrial humic acid with an activating agent which is potassium hydroxide, sodium hydroxide, zinc chloride, potassium carbonate or phosphoric acid uniformly to react under inert atmosphere protection for 1-5 hours; then cooling the product, washing the product in an acid solution until the pH value is 6-7 and drying the product, thus obtaining the activated carbon. The method is convenient to operate, is relatively low in energy consumption and is suitable for large-scale industrial production. The humic acid porous activated carbon material obtained by the method has a rich porous structure and a relatively big specific surface area, is used for preparing water purifiers or electrode materials of supercapacitors, and has methylene blue dye adsorption value of 600mg/g. Besides, the humic acid porous activated carbon material is used as the electrode material of a supercapacitor to assemble a high-performance supercapacitor. The specific capacitance of the activated carbon single electrode is 351Fg<-1>. Various test results show that the activated carbon is microporous-mesoporous composite carbon and has specific surface area of about 3200m<2>/g, the pore size distribution of the activated carbon is 1-5nm, and the pore volume of the activated carbon is about 2cm<3>/g.

Description

technical field [0001] The invention relates to a method for preparing a high-performance activated carbon material using humic acid as a raw material, and the application of the activated carbon as a water purifying agent and a supercapacitor electrode material. Background technique [0002] Activated carbon is a kind of porous carbon material, which has the characteristics of highly developed pore structure and huge specific surface area, strong adsorption capacity, good chemical stability, high mechanical strength, and easy regeneration after use failure. As an excellent adsorbent and catalyst carrier, activated carbon has been widely used in the chemical industry, [0003] In the fields of food processing, transportation energy, medical care, agriculture, national defense, etc., as well as environmental protection and human life, 51 of the 64 organic pollutant indicators in the drinking water standards of the US Environmental Protection Agency (USEPA) list activated carb...

Claims

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Application Information

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IPC IPC(8): C01B31/12B01J20/20B01J20/30C02F1/28C02F1/58H01G11/44C01B32/348
CPCY02E60/13
Inventor 殷娇王传义
Owner XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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