Li Cheng-Wu, Wang Jin-Gui, Xie Bei-Jing, Dong Li-Hui, Sun Ying-Feng, Cao Xu
Guang Pu Xue Yu Guang Pu Fen Xi. 2014 Nov;34(11):2961-7.
There are many hydrogen bonds in coal, which affect the chemical structure and properties of coal. FTIR has been applied to the characterization study of the hydrogen bonds of Dongpang coals, which were under drop weight impact. There exists five kinds of hydrogen bonds in the coal: free OH groups, OH...π, OH...OH, cyclic OH tetramers and OH...N. Absorption strength of intermolecular hydrogen bonds markedly declined after impact. Free OH groups mechanical-power chemical reacted in drop weight impact testing. The infrared spectrum were curve-resolved into their component bands. The absorption strength of various hydrogen bonds decreased with the increase of impact energy, but the trend was slowing. By statistical relationship between then, we find then complying with power function relationship. By comparing the exponents of fitted equations, we concluded that failure sensitivity sequence of hydrogen bonds to the impact: free OH groups > cyclic OH tetramers > OH...N > OH...π > OH...OH.
煤中存在许多氢键，这些氢键影响着煤的化学结构和性质。傅里叶变换红外光谱（FTIR）已被应用于对遭受落锤冲击的东庞煤氢键的表征研究。煤中存在五种氢键：游离羟基、羟基…π、羟基…羟基、环状羟基四聚体和羟基…氮。冲击后分子间氢键的吸收强度显著下降。游离羟基在落锤冲击试验中发生了机械力化学反应。红外光谱被曲线分解为其组成谱带。各种氢键的吸收强度随冲击能量的增加而降低，但趋势逐渐变缓。通过它们之间的统计关系，我们发现它们符合幂函数关系。通过比较拟合方程的指数，我们得出氢键对冲击的失效敏感顺序为：游离羟基＞环状羟基四聚体＞羟基…氮＞羟基…π＞羟基…羟基。
