98.石炭の空気酸化がチャーの孔隙構造および反応性に及ぼす影響

抄録

Investigation was done about the effect which the air oxidization of the coal exerted on the pore-structure and reactivity of chars about 41 kind of common coal samples which will be used newly. Three kinds of chars were prepared under different heating-conditions. On the other hand, it oxidized with 398K in the air for seven hours, and char was made in the same method. As for the specific surface area of parent coals, true density increased due to the oxidization. Yield of chars increased by oxidization, and it was remarkable in rapid-heating, and that effect increased greatly as the low of C%. The specific surface area of chars showed a tendency of increase due to the oxidization. There was no change in the reactivity of chars on the condition for seven hours that it oxidized at 398K.