Patent ID: 6057262
Filing Date: 2000-05-02
Classification: C01B,Y02P

Abstract:
A process for the manufacture of activated carbon comprising:reacting a biomass feedstock with a processing agent in the presence of an activation agent wherein said biomass feedstock is selected from the group consisting of wood, nut shell, husk, fruit pit, peat, lignite, subbituminous coal, mixtures thereof, said processing agent is selected from the group consisting of furfrryl acetate, furfuryl alcohol, adipic acid, 1,4,5,8-naphthalene tetracarboxylic acid hydrate, quinoline, 2-hydroxy quinoline, 2,3-dihydroxy pyridine, 2-hydroxydibenzofuran, 2,6-pyridinedicarboxylic acid, terepthalic acid, resorcinol, o-cresol, benzoic acid, benzenetetracarboxylic acid, humic acid, dibasic acid and mixtures thereof and said activation agent is selected from the group consisting of phosphoric acid, metal chlorides, inorganic acids, sodium phosphates, bases and mixtures thereof;heating the biomass feedstock in the presence of the processing and activation agents to a temperature of at least 350.degree. C. for a time period sufficient to produce a chemically activated carbon material from the biomass feedstock;leaching the activated carbon material with a leaching reagent; anddrying the activated carbon material.