A kinetic investigation on the pyrolysis of Seguruk asphaltite

Tonbul Y., Saydut A., Yurdako K., Hamamci C.

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, vol.95, no.1, pp.197-202, 2009 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 95 Issue: 1
  • Publication Date: 2009
  • Doi Number: 10.1007/s10973-008-9054-7
  • Journal Name: JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.197-202
  • Keywords: asphaltite, Coats-Redfern method, kinetic, Seguruk, TG, AVGAMASYA ASPHALTITE, HEATING RATE, OIL-SHALES
  • Dokuz Eylül University Affiliated: Yes

Abstract

The pyrolysis of Seguruk asphaltite has been investigated using thermogravimetric analysis at atmospheric pressure between 293 to 1223 K at different linear heating rates of 5, 10 and 20 K min(-1) under nitrogen as ambient gas. There was a two-stage thermal decomposition. Thermal decomposition started around 630 K for stage 1 for the slowest heating rate. On the other hand, for the same heating rate and stage 2, thermal decomposition started around 950 K. These values were shifted to higher temperatures with increasing heating rate. In this study, two different Coats-Redfern methods were applied to thermal degradation of Seguruk asphaltite.