29023
Carbon Xerogel Microspheres and Monoliths from Resorcinol - Formaldehyde Mixtures with Varying Dilution Ratios : Preparation , Surface Characteristics , and Electrochemical Double - Layer Capacitances .
 Carbon, Resorcinol, Formaldehyde
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 Carbon, Resorcinol, Formaldehyde