煤裂解反应红外光谱研究

本文用红外光谱检出了我国河北峰峰煤矿黄沙肥煤中的主要官能团, 定量地研究了该煤在裂解过程中主要官能团, OH、CH_2、C—O—C、芳香族稠环等的反应动力学。求出各种官的团在不同裂解温度下的反应速率常数、反应级数及表观活化能。

IR STUDY ON COAL PYROLYSIS

The groups, OH, CH_2, CH_3, C—O—C etc. in fat coal from Feng-Feng in He-Bei province has been examined. The disappearance kinetics of these groups were also determined by IR method. The results showed that the disappearance reactions for these groups followed first-order reaction.The rate constants and corresponding activation energies to each reaction are: ---------------------------------------------------------------------v/cm~(-1) group 10~2 k/s~(-1) E_a/kJ mol~(-1)----------------------------500 ℃ 550 ℃ 600 ℃ ---------------------------------------------------------------------3690 OH 2.92 9.05 9.26 68.12920 CH 5.16 9.47 12.8 53.51600 Aromatic 1.85 2.03 6.22 71.9 C=C1035 Asymmetric 2.05 4.21 8.31 81.1Ar—O—C1010 Symmetric 1.85 4.17 7.92 85.3Ar—O—C-----------------------------------------------------------------------