鸡西煤化学结构的演化

STUDY ON THE CHEMICAL STRUCTURE EVOLUTION OF JIXI COALS

采用Ｘ射线衍射、红外光谱等手段对鸡西煤不同煤化作用阶段煤结构演化进行了研究．Ｘ射线衍射分析显示，随着煤化程度增加，反映芳香核大小的Ｌｃ和Ｌａ都逐渐增加，而芳香层间距ｄ００２逐渐减小；红外光谱分析显示，不同变质程度煤中都含有芳烃，随着煤化程度加深，芳香核的缩合程度增加，醇、酚、羟基等侧链基团的吸收峰逐渐减弱．

The chemical structure evolution of coals in different coalification stages were studied using X-ray diffraction and infrared spectrometry. The result of X-ray diffraction analysis shows that with the increase of coalification the Lc and La that express the size of aromatic nucleus get bigger gradually, and the d002 that expresses the spacing of aromatic layers gets smaller. The result of infrared spectrometry expresses that the coals in any coalification all contain aromatic hydrocarbon, and with the increase of coalification the aromatic nucleus shrink more and the absorbing peaks of alcohol and phenolic hydroxyl group ect. weaken gradually.