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Effect of the pore-structure of coals and their chars on the reactivity of the chars

Publisher
Elsevier Science
Year
2002
Weight
173 KB
Volume
43
Category
Article
ISSN
0140-6701

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Seven kinds of coals (C, 77.S89.8 wt% daf) were oxidized with air at 150ยฐC for 1, 5 and 10 h. The oxidized coals were heat-treated at various temperatures between 300 and 1500ยฐC with intervals of 50 or 100ยฐC. The pore-structure of the oxidized coals and the cokes or chars obtained from the oxidized

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Measurements of porosity and of reactivity to CO? have been made on chars by pyrolyzing three British bituminous coals of medium rank (Markham Main, Manvers Barnborough, and Manvers Wath). The porosity measurements were made by gravimetric adsorption of CO, at 195 K. Resulting isotherms were analyse