抚顺烟煤及其抽出物的FTIR光谱结构表征

FTIR SPECTROSCOPIC ANALYSIS OF FUSHUN BITUMINOUS COAL AND COAL EXTRACTS

用富立叶变换红外光谱(FTIR)对抚顺烟煤的有机组分进行了测定。通过对谱图的解析,指出抚顺烟煤及其吡啶抽出物和抽提残煤在结构上的异同。以及抽出物各色谱馏分中存在的官能团和官能团之间极性的差异,对原煤整体结构提供了精细的结构信息。

FTIR spectroscopy offers considerable advantages for the characterization of highly absorbing materials such as coal. This method was applied to both the organic and inorganic parts of Fushun bituminous coal. This method allows distinguishing of the substance extracted by solvents, the unextractable coal matarial and the original coal benzene-methaaol-soluble fraction of pyridine extract was subjected to chromatographic fractionation by sequential elution from a silica-gel column using a specific sequence of solvent. The functional groups present in each fraction were identified by their IR spectra. We demonstrate that FTIR is a powerful tool for determining the types of function groups present in each fraction, which provides useful information on the complete structure of original coal.