| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing activated carbon by kneading a carbonaceous raw material with an activating agent so that the light absorption factor of the kneaded product becomes a specific rate based on the light absorption factor of the carbonaceous raw material, molding the kneaded product and subsequently baking the molded product, capable of efficiently and homogeneously adding the activating agent to the product to impart a sufficient strength and a sufficient adsorption performance to the product. SOLUTION: The carbonaceous raw material used as a raw material for the activated carbon includes cellulosic raw materials such as wood, wood chips and coconut husks as woody raw materials, and starchy materials such as Setaria italica, Panicum crus-galli, corns and Panicum miliaceum. The chemical activating agent is preferably zinc chloride, calcium chloride, sodium hydroxide or phosphoric acid. The chemical activating agent and the carbonaceous raw material are kneaded until the 1100 cm<-1> light absorption factor of the kneaded product is <=20% based on the 1100 cm<-1> light absorption factor of the carbonaceous raw material. The activated carbon is preferably prepared by kneading the activating agent with the carbonaceous raw material e.g. at the ordinary temperature to 200 deg.C, preferably 100-180 deg.C, within 30 min, preferably within 15 min, to impregnate the activating agent into the carbonaceous raw material, granulating the kneaded product, and subsequently baking the granules. |
