Activated carbon, filter for smoking article and smoking article including the same

Abstract

Disclosed is activated carbon having an excellent ability to remove vapor phase components. According to one aspect, there is provided activated carbon including a micropore having a pore diameter of less than 2 nm, wherein a ratio of the micropores is from 70 vol % to 80 vol % based on a total pore volume of the activated carbon, and the activated carbon has a BET specific surface area of 2,000 m2/g or more.

1 . Activated carbon comprising a micropore having a pore diameter of less than 2 nm,
 wherein a ratio of the micropores is from 70 vol % to 80 vol % based on a total pore volume of the activated carbon, and   the activated carbon has a BET specific surface area of 2,000 m 2 /g or more.   
     
     
         2 . The activated carbon of  claim 1 , wherein the micropore has a volume of 0.8 cm 3 /g to 1.1 cm 3 /g. 
     
     
         3 . The activated carbon of  claim 1 , further comprising a mesopore having a pore diameter of 2 nm or more and 50 nm or less,
 wherein a ratio of the mesopores is from 15 vol % to 25 vol % based on a total pore volume of the activated carbon.   
     
     
         4 . The activated carbon of  claim 3 , wherein the mesopore has a volume of 0.2 cm 3 /g to 0.4 cm 3 /g. 
     
     
         5 . The activated carbon of  claim 1 , further comprising a macropore having a pore diameter of more than 50 nm,
 wherein a ratio of the macropores is from 1 vol % to 5 vol % based on a total pore volume of the activated carbon.   
     
     
         6 . The activated carbon of  claim 5 , wherein the macropore has a volume of 0.01 cm 3 /g to 0.10 cm 3 /g. 
     
     
         7 . The activated carbon of  claim 1 , wherein the activated carbon has a BET specific surface area of 2,200 m 2 /g or more. 
     
     
         8 . The activated carbon of  claim 1 , wherein the activated carbon has a total pore volume of 1.0 cm 3 /g or more. 
     
     
         9 . A filter for a smoking article, the filter comprising the activated carbon of  claim 1 . 
     
     
         10 . A smoking article comprising:
 a filter portion; and   a medium portion disposed on one side of the filter portion,   wherein the filter portion comprises the filter for a smoking article of claim  9 .   
     
     
         11 . The smoking article of  claim 10 ,
 wherein the filter portion comprises:   a first portion; and   a second portion that is different from the first portion,   the second portion is closer to the medium portion than the first portion, and   the second portion comprises the filter for a smoking article.