Interaction between Carbon Dioxide and the Zinc Oxide Surface

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概要

• 論文の詳細を見る

• The adsorption of carbon dioxide has been measured at 25°C on zinc oxide surfaces with different amounts of preadsorbed carbon dioxide. As a result, it has been found that carbon dioxide molecules are chemisorbed more weakly to zinc oxide surfaces than water; the desorbability of carbon dioxide is almost complete upon evacuation at temperatures higher than 300 °C, whereas upon evacuation at 25°C 80% of the carbon dioxide remains on the surface. Also, the adsorption isotherms of carbon dioxide have been obtained at 25°C on differentlyhydroxylated surfaces of zinc oxide. On such surfaces, the adsorption amount of carbon dioxide decreases linearly with an increase in the amount of surface hydroxyl groups. This suggests that most of the carbon dioxide is adsorbed strongly on the vacant sites formed by dehydroxylation, and not on the surface hydroxyl groups.

• 公益社団法人 日本化学会の論文

著者

• MORIMOTO Tetsuo

  Department of Bio-mechanical Systems, Faculty of Agriculture, Ehime University

• Morishige Kunimitsu

  Department of Chemistry, Faculty of Science, Okayama University

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