Effect of Carbonization Temperature on the Physicochemical Structure of Wood Charcoal

Characteristics and microstructure of wood charcoal change dependently upon the carbonization conditions. Hinoki (Cypress, Chamaecy paris obtuse) was carbonized at 400°C, 600°C, 800°C and 1000°C for 1h in nitrogen gas flow. Charcoals were analyzed with adsorption isotherms of nitrogen, Fourier-transform infrared (FT-IR) spectroscopy, elemental analysis, electrical resistivity and Raman spectroscopy in order to investigate about the effect of the carbonization temperature on the structure of the charcoal. Increase of the carbonization temperature developed formation of micropores of the charcoal. From result of Raman spectroscopy, it was found that the crystal structure of the charcoal remarkably changed in the temperature range between 600°C and 800°C.