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| PDF : |  06050188.pdf |
| title(En) : | Studies on Charcoal. XI. Reactivity of Charcoal. |
| author(En) : | Fusako Abe, Sadakichi Kishimoto, Genji Unrin-in |
| information : | Mokuzai Gakkaishi 6(5), 188-193 (1960) |
| assort : | Original Article |
| summary(En) : | In order to obtain fundamental knowledge on the properties of charcoal produced from Quercus, Fagus, and other deciduous trees which are important species in Japan, the reactivity of charcoal to carbon dioxide at 950°C by the flow process in comparison with gas-oven coke, was investigated. Simultaneously, the aerial oxidation of the above samples was carried out with the quartz thermo-spring balance in higher temperature. The results are summarized as follows: (1) The reactivity of charcoal is very high, and after deashing by repeated washing with hot water, it drops but yet remains much higher than that of gas-oven coke. (2) Relationship between the reactivity and industrial analytical values of charcoal was determined, and high value of reactivity was obtained from deciduous char which contains much volatile matter, low moisture and fixed carbon. On the contrary, low value of reactivity was obtained from Quercus white charcoal, carbonized above 1000°C, which contains low volatile matter and high moisture and fixed carbon. (3) The activated energy obtained at the beginning of weight loss of aerial oxidation indicated a range between 4.2∼10.7 kcal/mol. The relationship between this energy and reactivity to carbon dioxide was represented in a straight line. |