This study describes the detailed hydrocarbon type characterization of the tar ( liquid phase) obtained by copyrolysis of Mustafa Kemal Pas, a ( M. K. P.) lignite ( Turkey) and low density polyethylene ( LDPE) and by pyrolysis of coal and LDPE individually. Various spectroscopic techniques [ gas chromatography- mass spectroscopy ( GC- MS), nuclear magnetic resonance spectroscopy ( 1H NMR), Fourier transform infrared spectroscopy ( FTIR), and gel permeation chromatography ( GPC)] are used for characterization, and the effect of the experimental conditions [ temperature, lignite: low density polyethylene ( LDPE) ratio, and catalyst] on the hydrocarbon distributions is discussed. The results show that the tars obtained by copyrolysis have similar properties with commercial gasoline ( especially in the presence of Red mud). Red mud and bentonite used as catalysts make a positive effect on the production of olefins instead aromatics. Polyethylene acts as a hydrogenation medium for the coal product as revealed by FTIR results.
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