1-17 　Analysis of low-temperature oxidation reaction on carbonized biomass

chemical structural analysis

Abstract

To elucidate the spontaneous oxidation and heat generation mechanism of carbonized biomass, its molecular structure was analyzed and compared with that of coal. It was found that a carbonized biomass sample (BP-A) has bigger cluster sizes and shorter side chains than that of the coal known for its high spontaneous heating tendency. Furthermore, the ESR spectrum of BP-A was measured while switching the atmosphere from N₂ to O₂ under heating conditions. While the radical concentration increased in the coal, it decreased in BP-A. These results suggest that BP-A exhibits a different low-temperature oxidation and heat generation mechanism compared to the coal.