Abstract: A halogen treatment is conducted comprising: a halogenation step wherein a halogenation heat treatment for preparing a halogenated carbonized charcoal is conducted in which the carbonized charcoal is brought into contact with halogen; and a dehalogenation step wherein a dehalogenation treatment is conducted in which a part of or all halogen atoms in the halogenated carbonized charcoal are eliminated. A porous carbonaceous material is obtained at a high yield, and the amounts of nitrogen, oxygen, carbon dioxide, and methane adsorbed by this porous carbonaceous material are large. When this porous carbonaceous material is used as an electrical double layer capacitor carbon, the electrostatic capacity is increased compared to conventional carbonaceous materials. Consequently, a carbonaceous material is obtained which has micopores and/or sub-micropores which are suitable for the adsorption of small molecules such as nitrogen, and for storage of electrochemical energy.

Abstract: It is possible to increase the amount of nitrogen generated per unit of adsorbent, raise the nitrogen yield, and reduce the manufacturing cost for nitrogen by using, as an adsorbent for the separation of nitrogen, molecular sieving carbon obtained by successively conducting a halogenation treatment, a dehalogenation treatment, and a pore adjustment treatment on a carbonized charcoal. By using activated carbon obtained by successively conducting a halogenation treatment, a dehalogenation treatment, and an activation treatment on a carbonized charcoal, as an adsorbent for carbon dioxide and methane, it is possible to improve the amount adsorbed.

Abstract: A process for producing a molecular sieve carbon, which comprises subjecting a cured product obtained by curing a raw material thermosetting resin to heat oxidation; pulverizing the oxidized product formed after the heat oxidation treatment; granulating the resulting pulverized product; subjecting the resulting granule to carbonization; subjecting the carbonized charcoal obtained in the carbonizing step to heat treatment; and adjusting the pore size of the heat-treated carbonized charcoal.