8744
The samples exhibit BET equivalent surfaces between 150 and 220 m ( 2 ) / g and pore volumes which increase from 0 . 06 to 0 . 11 cm ( 3 ) / g while the layer charge reduces .
 None
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities:  
Answer:
 None