THERMOGRAVIMETRIC ANALYSIS OF PRETREATED GÖYNÜK OIL SHALE AND ŞIRNAK ASPHALTITE
Articles > Article · 2004
Authors: T. Karayildirim, J. Yanik, Mithat Yüksel, Mehmet Sağlam
Oil Shale, International, WoS, 2004, vol 21, pp 205-216
Summary
To investigate the effect of mineral matrix on thermal degradation of Göynük oil shale and Şırnak asphaltite, their samples (initial ones and those subsequently treated with solutions of the acids: HCl, HNO 3 and HF) were studied in a thermogravimetric analyzer.Initial and HCl-washed samples showed similar degradation behavior, while HNO 3 washing affected it in both cases.Changes in organic structure, which is different for shale and asphaltite -the former being aliphatic, and the latter having aromatic character -after HNO 3 treatment affected the degradation kinetics of the samples differently, whereas the mineral matter content had no effect on it.