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Adsorption and Reaction of Carbon Dioxide on Zirconium Dioxide

Ronald G. Silver, Nancy B. Jackson, John G. Ekerdt

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Abstract

The activation of carbon dioxide was studied over a zirconium dioxide catalyst via infrared spectroscopy and 18 O-labeled reactants. The carbon dioxide adsorbed on the surface as either a carbonate or a bicarbonate species. The carbonate species formed as a result of CO 2 interaction with lattice oxygen. The bicarbonate species formed from CO 2 interaction with a hydroxyl group. There was no direct interconversion between the carbonate and the bicarbonate. It is proposed that the bicarbonate can be converted to the formate via molecular CO.

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The activation of carbon dioxide was studied over a zirconium dioxide catalyst via infrared spectroscopy and 18 O-labeled reactants. The carbon dioxide adsorbed on the surface as either a carbonate or a bicarbonate species. The carbonate species formed as a result of CO 2 interaction with lattice oxygen. The bicarbonate species formed from CO 2 interaction with a hydroxyl group. There was no direct interconversion between the carbonate and the bicarbonate. It is proposed that the bicarbonate can be converted to the formate via molecular CO.

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Available abstract

The activation of carbon dioxide was studied over a zirconium dioxide catalyst via infrared spectroscopy and 18 O-labeled reactants. The carbon dioxide adsorbed on the surface as either a carbonate or a bicarbonate species. The carbonate species formed as a result of CO 2 interaction with lattice oxygen. The bicarbonate species formed from CO 2 interaction with a hydroxyl group. There was no direct interconversion between the carbonate and the bicarbonate. It is proposed that the bicarbonate can be converted to the formate via molecular CO.

Key concepts: Carbon dioxide, Bicarbonate, Formate, Carbonate, Inorganic chemistry, Chemistry, Adsorption, Zirconium dioxide

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