Vacuum microbalance studies on the combustion of Saraji coal

Samples of Saraji coal have been oxidised in air at various temperatures and for different times. Products have been examined by a gravimetric gas sorption technique. Results are presented for changes in surface area and porosity with carbon burn-off and discussed in relation to kinetics of the oxid...

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Bibliographic Details
Published in:Thermochimica acta 1986-07, Vol.103 (1), p.157-162
Main Authors: Adams, K.E., Glasson, D.R., Jayaweera, S.A.A.
Format: Article
Language:English
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Summary:Samples of Saraji coal have been oxidised in air at various temperatures and for different times. Products have been examined by a gravimetric gas sorption technique. Results are presented for changes in surface area and porosity with carbon burn-off and discussed in relation to kinetics of the oxidation. There is considerable development of surface and porosity as the oxidation proceeds, especially during the first half of the burn-off. However, oxidation of the coal is only slightly accelerated, since most of the new surface is located in micro- or meso-pores where access to atmospheric oxygen is restricted by slow diffusion.
ISSN:0040-6031
1872-762X
DOI:10.1016/0040-6031(86)80026-0