MODELLING OF THE INTERACTION OF NITROGEN DIOXIDE WITH ACTIVATED CARBON II. KINETICS OF REACTION WITH PORE EVOLUTION
作者:
P.G. GRAY,
D.D. DO,
期刊:
Chemical Engineering Communications
(Taylor Available online 1993)
卷期:
Volume 125,
issue 1
页码: 109-120
ISSN:0098-6445
年代: 1993
DOI:10.1080/00986449308936197
出版商: Taylor & Francis Group
关键词: Surface reaction kinetics;Gasification;Random pore model
数据来源: Taylor
摘要:
Adsorption of nitrogen dioxide on activated carbon is found to be followed by reaction with the carbon surface at temperatures higher than 373 K. The dynamics of the nitrogen dioxide reaction with the carbon are measured gravimetrically over the temperature range 423-623 K. At small particle sizes (0.014 cm radius) the overall gasification kinetics are controlled by the surface reaction step, and are first order in nitrogen dioxide concentration. Using the random pore model to describe the evolution of reaction surface with porosity, the experimental data are fitted by a kinetic control gasification model, giving an activation energy of 86.2 kJ/mole.
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