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Application of Mesopore Activated Carbon in Catalyst

Activated carbon pore size is generally divided into three categories:

Large pore: 1000-1000000A

Transition pore: 20-1000A

Microporous: 20A

According to the above characteristics, for different adsorption objects, need to use the corresponding activated carbon, in order to achieve the best effect.

Therefore, generally in the liquid phase adsorption, should use more transition pore size and the average pore size of the activated carbon.

Different kinds of raw materials, different methods of production of activated carbon with different pore size, in which the coconut shell as the raw material of the smallest pore of activated carbon, wood activated carbon pore size is generally larger, coal activated carbon pore size between the two, the chemical production activated carbon developed come with large pore and mesopore , the physical production of activated carbon micro is also more developed, but this is not the right, and now some companies have mastered the aperture control process, you can use different processes to adjust the aperture.

there are different pores of activated carbon, so should be how to choose?

   Large pores is the channel of adsorption when adsorbed, the specific surface area is generally small, 0.52m2 / g, itself does not adsorb. However, when the activated carbon is used in the field of catalysis, the larger pores are important as the place where the catalyst is deposited. By allowing the microorganisms and fungi to propagate therein, the inorganic carbon material can exhibit the biomass function, and as the microorganisms and Different types of bacteria, the corresponding changes in the function. Therefore, bioactive activated carbon requires a certain amount of large pores.

 Mesopore in the application of activated carbon plays a very important role, first of all it can be used to add the catalyst and the rinse of chemicals, with the addition of the different types of drugs, the function is different, so that the activated carbon has Catalyst performance or other special adsorption properties; at the same time in the pore under sufficient steam pressure by capillary condensation principle of adsorption of steam, which is reflected in the pore in the activated carbon on the organic macromolecules have a good adsorption, commonly used to remove the larger solution Of the colored impurities or colloidal particles to make the solution decolorization; Second, the pore can be used as adsorbate into the channel of Microporous .  Tongke wood based Activated Carbon has developed mesopores and good effect on decolorization performance

The mesopores have a greater impact on the catalyst field

 To the catalytic field in general there are two cases, the first is the activated carbon itself as a catalyst, the macroporous favorable catalyst dispersion, improve the activity and reduce the impact of carbon deposition of activated carbon, thereby extending the service life, the second is activated carbon do As the carrier, the heavy metal, the transition metal and other active components are loaded, and the micropores of the activated carbon are blocked by the catalytically active component by the loading, and the effective components are uniformly adhered to the medium and large pore walls. Of the performance depends on whether the activated carbon in the hole is developed, the larger the hole in the more favorable catalyst dispersion, improve the activity and reduce the impact of carbon deposition of activated carbon, thereby extending the service life.