Patent ID: 6475461
Filing Date: 2002-11-05
Classification: B01J,C01B,C04B,H01G,H01M,Y02C,Y02E

Abstract:
A manufacturing method for a porous carbonaceous material characterized by conducting a halogen treatment comprising:a halogenation step wherein a halogenation heat treatment for preparing a halogenated carbonized charcoal having an atomic ratio of halogen to carbon of 0.07 or greater is conducted by bringing a carbon consisting essentially of carbonized charcoal into contact with a halogen gas consisting essentially of chlorine or bromine; and followed by a subsequent dehalogenation step wherein a dehalogenation treatment is conducted in which a part of or all halogen atoms in said halogenated carbonized charcoal are eliminated, wherein the atomic ratio of halogen to carbon is reduced to 0.06 or less by heating said halogenated carbonized charcoal under vacuum evacuation, in an inert gas, in a gas of a hydrogen containing compound or hydrogen, or in a gas of a hydrogen containing compound or hydrogen diluted with an inert gas.