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Study of subbituminous coal chars: Effect of heat treatment temperature on their structural characteristics
Author(s) -
Gutierrez Maria Del Carmen,
Cukierman Ana Lea,
Lemcoff Norberto O.
Publication year - 1988
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/jctb.280410202
Subject(s) - char , coal , adsorption , diffusion , materials science , chemistry , sorption isotherm , chemical engineering , thermodynamics , organic chemistry , physics , engineering
Changes in the apparent surface area that are produced by carbonisation of a subbituminous coal at different temperatures are followed by adsorption of CO 2 at 273 K and 298 K, the Dubinin—Radushkevich equation being used. Activated diffusion effects are found for the char samples prepared at 973 and 1173 K. A maximum in the apparent surface area is found at 1073 K.