CHARACTERIZATION OF DACHENGZI OIL SHALE FAST PYROLYSIS BY CURIE-POINT PYROLYSIS-GC-MS

Y HUANG, X HAN, X JIANG
2015 Gorûcie slancy  
Fast pyrolysis of a Dachengzi oil shale sample was studied using a Curie-point pyrolyzer, the pyrolysis products were characterized online by gas chromatography-mass spectroscopy. Nine different Curie-point temperatures were chosen to investigate product distribution regularities. Hydrocarbons were the major components of the fast pyrolysis products of oil shale. n-Alkanes were generated at all the nine temperatures, while cycloalkanes only appeared at the temperatures above 485 °C. Branched
more » ... 485 °C. Branched alkanes were seldom produced at all the temperature points because of the bond cleavage at the branch point. Alkenes and aromatic compounds began to be formed at 386 °C and 423 °C separately, and their molecule sizes decreased with increasing pyrolysis temperature. Various oxygen-containing compounds, including ketones, acids, alcohols, esters and phenols, were identified in the shale oil components, indicating the wide existence of oxygen-containing functional groups.
doi:10.3176/oil.2015.2.04 fatcat:hwmti77hpja4tbrwfxxlk4gh6e