The role of activated carbon in gas masks

　　According to the performance of the gas mask, the pore size distribution of activated carbon must be mostly microporous, so that it can be more suitable for adsorbing substances with small molecular diameter (toxic gas). If the pore width of the adsorption pore of activated carbon is smaller than the critical molecular diameter of the adsorbate, it belongs to Invalid pores, but too wide pores can only function as diffusion channels. Therefore, only the critical molecular diameter of the adsorbate is smaller than the pore width, and it cannot exceed a certain size requirement (according to various types of anti-virus) to achieve effective adsorption.

　　Activated Carbon Agents in Gas Masks To find out what is an activated carbon agent, the first thing to do is to figure out what is activated carbon. The so-called activated carbon is a granular porous crystal or powder, which is mostly black. It has a porous structure and is a charcoal which has a strong adsorption capacity for gases. According to the difference in raw materials, activated carbon is usually classified into two types of wood. The filter box of the gas mask is mostly wood activated carbon, and the shape is mainly granular. According to the performance of the gas mask, the pore size distribution of the activated carbon must be mostly microporous, so that it is more suitable for adsorbing substances with small molecular diameter (toxic gas). If the pore width of the adsorption pore of the activated carbon is smaller than the critical molecular diameter of the adsorbate, it is an invalid pore, but the excessively wide pore can only function as a diffusion channel. Therefore, only the critical molecular diameter of the adsorbate is smaller than the pore width, and it cannot exceed a certain size requirement (according to various types of anti-virus) to achieve effective adsorption. The most effective effect of a gas mask is its ability to decompose various toxic gases. It can also be expressed as a decomposition of a certain adsorbent-related substance. To achieve such a function, the activated carbon used in the gas mask must be required to reach The relevant standards, and why the gas mask does not choose the relevant charcoal or other substances such as bone carbon, in fact, this is the role of an adsorbent.

　　Advantages of activated carbon: Activated carbon has many pores of different sizes, and some people will worry about whether the virus will pass through the gas mask? The answer is naturally no, there are many chemicals on the surface of activated carbon, these chemicals are attached to activated carbon. The surface, as long as the relevant toxins enter, will occur chemically, so that the toxicity will be much reduced, until such toxins can not cause harm to the human body, of course, which chemical reaction is such According to the investigation, activated carbon mostly uses a chemical reaction of metal oxides, and a series of oxidation reactions using copper, silver and chromium metals have finally achieved the effect of attenuating and detoxifying.