Pyrolysis of eight representative mat samples both in their raw and demineralized forms were carried out at 680 degrees C Production of C-1-C-5 hydrocarbons were monitored by gas chromatography. A comparison of the total yields of lower hydrocarbons from raw and demineralized coals was made, The results indicate an increase in the yields of lower hydrocarbons from demineralized coals as compared to their raw forms.
I ULLAH ,I A AWAN ,
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