Analysis of an erdos medium-temperature coal tar by Gas Chromatography-Mass Spectrometer

Medium-temperature coal tars, Just like the high-temperature ones, are primary source for chemical industry, and call more and more attention by far. The adequate characterization of their features is critical for their efficient utilization, but little reports were issued, if any. This work performed anslysis of a medium-temperature coal tar by a Gas Chromatograph/Mass Spectrometer. Totally 139 compounds were detected in the sample, including oxygen-containing compounds, aromatic hydrocarbons, aliphatic hydrocarbons and polycyclic hydrocarbons. Among which the phenoids and normal alkanes are in quite high abundances, while the aromatic and polycyclic hydrocarbons involve quite a variety of species but in very low abundances. This result shows a rosy possibility of medium-temperature coal tar for phenoid production. This work also provides helpful information for coal chemistry research. The result suggests a lot of linkages of -O- inside the coal structure and the mainly aromatic units being of 2 to 3 rings, while the polycyclic hydrocarbons can survive the medium- or low- temperature coking, thus providing an assistant tool for studies on geochemistry and coal geology.