期刊
CHEMICAL ENGINEERING SCIENCE
卷 175, 期 -, 页码 130-138出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ces.2017.09.043
关键词
Methanol synthesis; Renewable resources; Reaction kinetics; Parameter identification
In the present paper new detailed kinetic model for the methanol synthesis from H-2, CO2 and/or CO using a Cu/ZnO/Al2O3 catalyst is proposed. In contrast to most established models different active surface species for CO and CO2 hydrogenation are taken into account. It is shown that changes in the relative amounts of these different surface species, which are related to changes in catalyst morphology, play an important role for the dynamic transient behavior. The model is therefore suitable for evaluating new applications in chemical energy storage, where strongly varying ratios of CO and CO2 are of relevance. The model parameters were fitted to steady state and dynamic experimental data for varying CO/CO2 feed ratios using global optimization. Identifiability is studied using the Profile-Likelihood method giving rise to a reduced kinetic model. (C) 2017 Elsevier Ltd. All rights reserved.
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