Heating rate effect on the DSC kinetics of oil shales

KÖK M. V.

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, cilt.90, sa.3, ss.817-821, 2007 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 90 Sayı: 3
  • Basım Tarihi: 2007
  • Doi Numarası: 10.1007/s10973-007-8240-3
  • Dergi Adı: JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.817-821
  • Anahtar Kelimeler: activation energy, DSC, heating rates, oil shale, reaction kinetics, thermal analysis, THERMAL-ANALYSIS, PYROLYSIS, COMBUSTION, THERMOGRAVIMETRY, MECHANISM
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

This research was aimed to investigate the combustion and kinetics of oil shale samples (Mengen and Himmetoglu) by differential scanning calorimetry (DSC). Experiments were performed in air atmosphere up to 600 degrees C at five different heating rates. The DSC curves clearly demonstrate distinct reaction regions in the oil shale samples studied. Reaction intervals, peak and burn-out temperatures of the oil shale samples are also determined. Arrhenius kinetic method was used to analyze the DSC data and it was observed that the activation energies of the samples are varied in the range of 22.4-127.3 kJ mol(-1) depending on the oil shale type and heating rate.