Effects of Heating Rate and Particle Size on Pyrolysis Kinetics of Gediz Lignite

Preparation of nickel-loaded on lignite char for catalytic gasification of biomass

“…The first peak below 200°C should be due to the elimination of moisture and low boiling point organic matters in the SL. The second peak that ranges from 200 to 500°C is the main peak in the DTG curve, which corresponds to the complex reactions, such as tar release, gas evolution, and semi-coke formation [21][22][23]. Compared with that for SL, the peak for Ni/SL shifted to lower temperature by about 50°C, which should be due to the catalysis of the inside dispersed nickel species.…”

Preparation of high-dispersion Ni/C catalyst using modified lignite as carbon precursor for catalytic reforming of biomass volatiles

“…2a, there is about 2.0% of weight loss below 200°C, which should be the removal of moisture and volatile organic matters. With the temperature increased from 200 to 500°C, the corresponding weight loss is about 13.0%, which should be due to a series of complex reaction (gas evolution, semi-coke formation and tar release) [32][33][34]. Derivative thermogravimetric (DTG) curve of DMSL is more obvious visually compared with others at the range of 200-500°C, which is probably attribute to the fact that small molecule compounds are more easily released as a result of strong acid treatment.…”

A Study on Thermal Decomposition Kinetics of Some Turkish Coals

“…These models were still preferred by recent studies (Ceylan and Olcay, 1998;Kucukbayrak et al, 2001;Guldogan et al, 2000Guldogan et al, , 2001aGuldogan et al, , 2001bGuldogan et al, , 2002. The distributed activation energy model should be used in the explanation of thermal decomposition kinetics of Turkish coals.…”