56.流通式熱量計を用いた褐炭表面性状の研究(1)

抄録

The surface properties of hydrothermal treated coals were assessed with calorimetoric measurement, with acidic or basic proves as adsorbent and isooctane. The heat of adsorption of pyridine per surface area of coal decreased with the treatment temperature. The ratio of heat of adsorption to desorption decreased for pyridine, in contrast to increasing for phenol by hydrothermal treatment of coal. These results suggested that the hydrothermal treatment resulted in change of functional groups which may act as acidic or basic site on coal surface.