This thesis focuses on the microkinetics of methanol synthesis over ternary Cu/ZnO/Al2O3 catalysts including catalyst morphology changes, especially due to changes in the Cu/ZnO interface. This further includes a closer analysis of adsorbate-substrate and adsorbate-adsorbate interactions. A surface-science based microkinetic model and two global kinetic models are used to describe the kinetics of methanol synthesis. The microkinetic model gives an approximation of structure sensitivity and gas-phase induced dynamic changes of the catalyst. Irreversible morphology changes are further incorporated into the microkinetic model to enhance the model experiment conformability during catalyst deactivation. Modeling elementary step kinetics close to working conditions gives an estimation for the extent of catalyst restructuring, which was up to now only quantified for model catalysts.
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This thesis focuses on the microkinetics of methanol synthesis over ternary Cu/ZnO/Al2O3 catalysts including catalyst morphology changes, especially due to changes in the Cu/ZnO interface. This further includes a closer analysis of adsorbate-substrate and adsorbate-adsorbate interactions. A surface-science based microkinetic model and two global kinetic models are used to describe the kinetics of methanol synthesis. The microkinetic model gives an approximation of structure sensitivity and gas-p...
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