Method of preparing transition metal modified activated carbon for eliminating harmful substance

A technology for the preparation of activated carbon and transition metals, applied in chemical instruments and methods, and other chemical processes, can solve the problems of high price, difficulty in preparation, and difficulty in industrial mass production, and achieve simple preparation process, low cost, and good adsorption performance Effect

Inactive Publication Date: 2007-12-12
张洪图
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

The above-mentioned methods have not been widely used and achieved the desired results because some materials are expensive and difficult to prepare, or because

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Embodiment 1, the preparation method of transition metal modified activated carbon, get 34.66 grams of ferrous ammonium sulfate, 20.84 grams of copper nitrate, 25.72 grams of nickel nitrate respectively by carrying capacity 20% (wt / wt) and be mixed with aqueous solution, with 50-80 purpose Add 100 grams of activated carbon to ferrous ammonium sulfate aqueous solution and soak for 1 hour, take out the activated carbon and dry it at 100-120°C for 1 hour; Dry for 2 hours; then add the activated carbon treated in the previous step into the nickel nitrate aqueous solution and soak for 2 hours until the exchange reaches equilibrium, take out the activated carbon and dry at 100-120°C for 1 hour. Calcining the transition metal-modified activated carbon treated in the above three steps at 300° C. for 5 hours in an inert atmosphere, and cooling to obtain transition metal-modified activated carbon.

Embodiment 2

[0053] Embodiment 2, in the present embodiment, get ferrous ammonium sulfate 51.99 grams, copper nitrate 31.26 grams, nickel nitrate 38.57 grams respectively according to loading capacity 30% (wt / wt) and be formulated into aqueous solution, with 50-80 mesh activated carbon 100 grams Add ferrous ammonium sulfate aqueous solution for immersion for 1 hour, take out the activated carbon and dry it at 100-120°C for 1 hour; then add the activated carbon treated in the previous step into copper nitrate aqueous solution for 2 hours, take out the activated carbon and dry it at 100-120°C for 2 hours Hours; then add the activated carbon treated in the previous step into the nickel nitrate aqueous solution and soak for 2 hours until the exchange reaches equilibrium, take out the activated carbon and dry it at 100-120°C for 1 hour. The transition metal-modified activated carbon processed through the above three steps was calcined at 400°C for 5 hours in an inert atmosphere, and cooled to ob...

Embodiment 3

[0054] Embodiment 3, in the present embodiment, get ferrous ammonium sulfate 86.66 grams, copper nitrate 52.09 grams, nickel nitrate 64.68 grams respectively according to loading capacity 50% (wt / wt) and be formulated into aqueous solution, with 50-80 mesh activated carbon 100 grams Add ferrous ammonium sulfate aqueous solution for immersion for 1 hour, take out the activated carbon and dry it at 100-120°C for 1 hour; then add the activated carbon treated in the previous step into copper nitrate aqueous solution for 2 hours, take out the activated carbon and dry it at 100-120°C for 2 hours Hours; then add the activated carbon treated in the previous step into the nickel nitrate aqueous solution and soak for 2 hours until the exchange reaches equilibrium, take out the activated carbon and dry it at 100-120°C for 1 hour. Calcining the transition metal-modified activated carbon treated in the above three steps at 500° C. for 4 hours in an inert atmosphere, and cooling to obtain tr...

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Abstract

The making of transitional metal modified active carbon gets copper, ferrous iron and nickel to make into water solution, adding the above three solutions to 50-80 mush active carbon, through dipping, drying and baking in 300-500deg.C inert atmosphere for 4-5 hours, cooling to get the active carbon. The copper, ferrous iron and nickel water solution selects cupric nitrate, ammonium ferric sulfate, and nickel nitrate. The dipping sequence is ferrous salt, nantokite and nickel water solution. It is based on the quantity of the active carbon to decide the weight of water solution, baking for 1-2 hours in 100-120deg.C before baking in inert atmosphere. It can effectively remove hazardous material.

Description

technical field [0001] The invention belongs to the technical field of adsorbents, in particular to a preparation method of transition metal modified activated carbon. Background technique [0002] With the continuous development of the economy and the continuous improvement of the living and working conditions of modern residents, people spend more and more time in the indoor environment, and the impact of indoor air pollution on human health has attracted widespread attention. Relevant data show that the urban indoor environment is polluted by various chemical and biological factors. In most cases, the pollution degree is worse than outdoors, especially in typical places indoors, such as buildings located on both sides of urban traffic arteries ( Office buildings, shopping malls and residences, etc.) and newly renovated houses. [0003] Typical indoor air pollutants include formaldehyde, nitrogen oxides, ammonia, benzene series, carbon monoxide and other total volatile or...

Claims

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Application Information

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IPC IPC(8): B01J20/20C01B31/08
Inventor 张洪图
Owner 张洪图
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