✦ LIBER ✦

Kinetics of the potassium carbonate-catalysed CO2 gasification of activated carbon

✍ Scribed by Freek Kapteijn; Jacob A. Moulijn

Publisher: Elsevier Science
Year: 1983
Tongue: English
Weight: 721 KB
Volume: 62
Category: Article
ISSN: 0016-2361
DOI: 10.1016/0016-2361(83)90203-x

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✦ Synopsis

In this study reaction rate data are presented of potassium carbonate-catalysed CO, gasification of an activated carbon, measured in a Packed Bed Balance Reactor over a CO2 pressure range of 0.05-2.03 MPa at 1050 K. As a result of CO inhibition the reactor only behaves differentially at CO, conversions ~4%. Based on the rate data a twestep oxidation-reduction cycle is selected as an adequate description of the reaction, which is valid over the whole range of carbon conversions. The selected rate expression is independent of the total pressure. The observed significant decrease in reaction rate above 50% carbon conversion is due to a decreasing number of active sites.

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