27653
The obtained results indicate that TOCN - COOH membranes are applicable as biobased H2 gas separation membranes in fuel cell electric power generation systems .
 Chemical: COOH; Chemical: H2
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: COOH; Chemical: H2