Investigation on the influence of wood pellets on the reactivity of coke with CO2 and its microstructure properties

Publikationen: Beitrag in FachzeitschriftArtikelForschung(peer-reviewed)


  • Lina Kieush
  • Andrii Koveria
  • Horst Hopfinger

Externe Organisationseinheiten

  • National Metallurgical Academy of Ukraine
  • Dnipro University of Technology


Adding 5 mass% wood pellets in a coal blend affects the reactivity with CO 2 and microstructural properties of the coke at different final coking temperatures of 950 and 1100 °C. A correlation between coke reactivity index (CRI) and BET specific surface area was found. The reactivity of coke and biocoke decreases with a decrease in the specific surface area, as well as with an increase in the carbonization temperature. Raman spectroscopy results indicate that the higher carbonization temperature of biocoke mitigates the effect of 5 mass% of biomass addition. The X-ray diffraction-based interlayer spacing of carbon crystallite (d 002) decreases slightly with increasing carbonization temperature, and crystallite height (L c) increases with rising coking temperature for both coke and biocoke. Additionally, the lower the d 002 value, the lower the CRI of the cokes and biocokes. A good correlation between CRI and d 002 is observed. Carbon crystallite width (L a) values increased with a rising carbonization temperature, indicating the intensive growth of carbon crystallites in all directions. However, these values for biocokes are lower due to the presence of charcoal particles.


Ausgabenummer1 February
Frühes Online-Datum7 Okt 2021
StatusVeröffentlicht - 1 Feb 2022