Patent ID: 7625839
Filing Date: 2009-12-01
Classification: C01B,H01G,Y02E,Y02T

Abstract:
1. A method of making an activated carbon, which comprises the steps of: a) pulverizing a coconut shell; b) carbonizing said coconut shell in an inert atmosphere to produce a coconut shell char; and c) heat-treating said coconut shell char at a temperature ranging from 900° C. to 1,100° C. in a steam gas atmosphere containing an inert gas selected from the group consisting of nitrogen, argon, and a combustion exhaust gas, wherein the content of steam in said steam gas atmosphere ranges from 30% by volume to 100% by volume, wherein said activated carbon has a BET specific surface area of 2000 m wherein the pore volume of pores having a pore diameter, as calculated according to a Cranston-Inkley method, of 5.0 nm (50 Å) to 30.0 nm (300 Å) is 0.05 cm