Research Article

Non-Isothermal Degradation Kinetics of CaCO3 from Different Origin

Table 4

Dependence of activation energy E (kJ mol−1) on the degree of conversion α using Ozawa-Flynn-Wall and Kissinger-Akahira-Sunose calculation procedures.

Degree of conversion, α Reagent-grade CaCO3In situ produced CaCO3
OFWKASOFWKAS

0.1145.8145.8121.6121.4
0.2155.8148.2126.3124.9
0.3161.7153.8131.0127.7
0.4166.3158.2135.1131.1
0.5169.3161.0138.9133.5
0.6172.2163.8141.8135.9
0.7175.5166.9145.2138.8
0.8176.9166.7149.6142.7
0.9178.2169.5151.3145.5

Average166.9 11159.3 10137.8 13133.5 12