Patent ID: 8226921

Claim:
An activated carbon produced by activating a raw coke with an alkali metal hydroxide, wherein the raw coke is produced from a feedstock composition comprising: a first heavy oil with an initial boiling point of 200° C. or higher produced by hydrodesulfurizing a heavy oil with a sulfur content of 2 percent by mass or more at a total pressure of 16 MPa or greater so that the hydrocracking rate will be 30 percent or less, and a second heavy oil with an initial boiling point of 150° C. or higher and a sulfur content of 0.5 percent by mass or less, produced by fluidized catalytic cracking a hydrocarbon oil and wherein a graphitized product obtained from graphitizing the raw coke at a temperature of 2800° C. under an inactive gas atmosphere has ratios of crystallite size to lattice constant of 360 or less in the (002) plane and 1500 or less in the (110) plane.