2.1 | Materials
Phenol, Amberlyst-15 and mercaptoethanol from Sigma Aldrich, acetone and 37% HCl from Carla Erba were used in these all experiments. Shimadzu GC-FID/2014 was used for the analysis. The method of analysis was found in literature (Neagu, 1998). The analysis method is as follows: The first 2 minutes column temperature is 50 ˚C. The column temperature increases to 250 °C with a ramp that lasts for 4 minutes with an increase of 50 °C per minute. Then the column temperature is held at 250 °C for 6 minutes. The detector temperature is 320 ˚C. Thus, the total analysis time for a sample is 12 minutes.