Activated carbon microspheres and preparation method thereof

A technology of active, carbon microspheres, applied in the preparation of microspheres, microcapsule preparations, etc., can solve the problems of low adsorption capacity and slow adsorption speed

Inactive Publication Date: 2010-06-02
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, they are still insufficient in the adsorption of hydrogen, carbon dioxide, etc., for example, the adsorption capacity is not high, and the adsorption speed is still slow.

Method used

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  • Activated carbon microspheres and preparation method thereof
  • Activated carbon microspheres and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0088] Example 1 : the preparation method of activated carbon microspheres of the present invention.

[0089] The preparation steps are as follows:

[0090] A. Use the QM-1SP planetary ball mill crushing equipment produced by Nanjing University Instrument Factory to pulverize the coal tar pitch that meets the national standard GB / T2290-94 to 200 mesh, weigh 100 grams of crushed coal tar pitch, and add 18 grams to the coal tar pitch Nano zirconia ceramic powder additive, stir and mix evenly with a glass rod, put it into a blast drying oven, carry out pre-oxidation in the air at a temperature of 350°C for 1.8 hours, and then maintain a constant temperature at a temperature of 480°C for 1.2 hours under a nitrogen atmosphere. Hour, then naturally cool to room temperature, obtain 109.8 grams of preoxidation product, use Hitachi S-4700 scanning electron microscope observation result to be listed in figure 1 , which shows that this preoxidation product is essentially spherical.

...

Embodiment 2

[0094] Example 2 : the preparation method of activated carbon microspheres of the present invention.

[0095] Carried out in the same manner as in Example 1, except that the nanometer titanium carbide ceramic powder additive was used.

[0096] The activated carbon microsphere material obtained in this example was also analyzed using the equipment and instruments described in the specification of this application, and the analysis results are listed in Table 1.

Embodiment 3

[0097] Example 3 : the preparation method of activated carbon microspheres of the present invention.

[0098] Carried out in the same manner as in Example 1, except that the nano-silicon nitride ceramic powder additive was used.

[0099] The activated carbon microsphere material obtained in this example was also analyzed using the equipment and instruments described in the specification of this application, and the analysis results are listed in Table 1.

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Abstract

The invention relates to activated carbon microspheres and a preparation method thereof. The diameter of the activated carbon microspheres is between 10 and 40 nm, the BET specific surface area is between 2,500 and 3,600m<2> / g, the total pore volume is between 2.5 and 3.2cm<3> / g, the mescopore pore volume is between 1.6 and 2.2cm<3> / g, and an average pore size is between 2.8 and 3.1nm. The preparation method for the activated carbon microspheres comprises the steps of: firstly, performing pre-oxidation on a mixture of coal tar pitch and an annexing agent; secondly, activating the mixture by using a strong basic compound; thirdly, cleaning by using a detergent; finally, drying to obtain the activated carbon microspheres.

Description

【Technical field】 [0001] The invention belongs to the technical field of micron carbon materials. More specifically, the present invention relates to an activated carbon microsphere, and also relates to a preparation method of the activated carbon microsphere. 【Background technique】 [0002] It is known that the existing activated carbon materials have a large number of pores, a high specific surface area, and a variety of active functional groups on the surface, which have good catalytic activity, not only that, but also have good chemical stability and high mechanical strength. High and can be used repeatedly, these excellent characteristics make the existing activated carbon material a high-quality adsorbent that has attracted worldwide attention. Activated carbon has been used in decolorization, anti-virus and deodorization in food and medicine for a long time, and as time goes by, they are more and more widely used in industry, national defense, Industrial technology ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/08B01J13/02
Inventor 薛锐生邵晓红丰震河
Owner BEIJING UNIV OF CHEM TECH
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