Abstract
The first step in the combustion of a char that has been formed from the pyrolysis of oil shale, lignite, or coal is the chemisorption of oxygen onto the active sites formed during the fragmentation reaction. This chemisorption process, can be associated with the way that the char was formed. It is definitely a function of the rate at which the raw material was pyrolyzed and the maximum pyrolysis temperature. Studies have been made which show that the chemisorption kinetics follow the theory normally associated with the chemisorption of gases on catalytic surfaces. However, when trying to determine the energy associated with the chemisorption of oxygen on chars, experimental difficulties were encountered which necessitated equipment and experimental changes for studying this type of reaction. A discussion of the problem and some of the observations are presented in this paper.
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