✦ LIBER ✦

Chemical reactivity of Canadian coal-derived chars

✍ Scribed by David P.C. Fung; Sang D. Kim

Publisher: Elsevier Science
Year: 1984
Tongue: English
Weight: 423 KB
Volume: 63
Category: Article
ISSN: 0016-2361
DOI: 10.1016/0016-2361(84)90423-x

No coin nor oath required. For personal study only.

✦ Synopsis

The reactivities of eight Canadian coal-derived chars of four different ranks were measured thermogravimetrically at 500°C. It has been found that char reactivity decreases with increase in the carbon content (or rank) of the parent coal. Chars containing more calcium and magnesium oxides have higher reactivities. The experimental results of mass conversion are well represented by the shrinking core model in which the initial staae of the reaction is kinetically controlled by chemical reaction and the later stage by gas diffusion throuih the ash.

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