| abstract |
The internal chemical filter 15 is obtained by fixing an infinite number of adsorbents 51 to a filter substrate 50 having a three-dimensional network skeleton structure. The adsorbent 51 is configured by attaching an additive to the surface of a powder or particulate porous body such as activated carbon. As an additive, an acidic metal salt, an organic acid, and an inorganic acid are used. The adsorbent 51 adsorbs the silanol compound contained in the air by dimerizing it with an additive. |