Patent ID: 8273683

Claim:
An active carbon comprising an alkaline earth metal compound in the inside of the particle and having a BET specific surface area of 10 to 2,000 m 2 /g as determined by a nitrogen adsorption method, and wherein the alkaline earth metal compound is a particle having a particle size of 10 μm or less, wherein the content of the alkaline earth metal compound is from 30 to 100,000 ppm by mass, the ratio of the peak height of D peak (1,360 cm −1 ) to the peak height of G peak (1,580 cm −1 ) in the Raman spectrum is from 0.8 to 1.2, and the volume of pores having a pore size of 20 to 50 Å is in the range of 0.02 ml/g or more as determined by the BJH method using the nitrogen adsorption method.