Influence of minerals and iron on natural gases generation during pyrolysis of type-III kerogen

Pyrolysis experiments in a closed system were conducted on kerogen (isolated from a low mature coal sample) either in the presence or absence of clay minerals, iron-bearing minerals, transition metal and their mixture, respectively. The generated gases were collected and analyzed for chemical compositions by using gas chromatography and mass spectrometer; the solid residues were also quantitatively collected and analyzed for iron species using...