25.フライアッシュ中ホウ素の化学結合形態の解明

抄録

Boron spectra for two fly ashes were measured by XPS to understand partitioning of boron in pulverized coal combustion processes. Boron functionalities were found as 185eV and 188eV peaks which are soluble and insoluble compounds, respectively. XPS measurements of fly ashes before and after leaching test, and observation of boron devolatilization by solid atomic absorption spectroscopy suggested that 185eV mean H_3BO_3 and another peak is AlB_2.