The analysis results in Table 3 show that with increasing temperature from 300 to 3800C T2, the performance of coal increased slightly; however, carbon content, methylene blue index and the index of iodine still peaking at temperature 3400C (respectively 81.27%, 490.86 mg / g and 42.46mg / g). Besides the FTIR spectrum analysis, we also found at 3400C, the hydroxyl group has the greatest absorption capacity on the CC1 (Figure 4). Therefore, we choose the 3400C temperature T2 to continue the experiment examined the heating rate.
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