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Transient Characterization of Carbon Monoxide, Carbon Dioxide and Oxygen Adsorbed on MgO and MgCO_3
https://kitami-it.repo.nii.ac.jp/records/6595
https://kitami-it.repo.nii.ac.jp/records/659529be4c7c-ae71-4a4f-9f7e-bd2af9f156b8
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
18-1-4.pdf (7.2 MB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
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| 公開日 | 2007-04-09 | |||||
| タイトル | ||||||
| タイトル | Transient Characterization of Carbon Monoxide, Carbon Dioxide and Oxygen Adsorbed on MgO and MgCO_3 | |||||
| 言語 | en | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源 | http://purl.org/coar/resource_type/c_6501 | |||||
| タイプ | departmental bulletin paper | |||||
| 著者 |
Yasuyuki, KONISHI
× Yasuyuki, KONISHI× Toshio, KATAGIRI× Shichi, YASUI× Yoshinori, NAKANISHI× Tohru, KANNO× Masayoshi, KOBAYASHI |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The dynamic adsorption behavior of O_2, CO and CO_2 on MgO and MgCO_3 has been studied in detail at temperatures ranging from 150 to 171℃, by using the transient response method. 0n MgCO_3 no CO adsorbs and no CO oxidation proceeds. CO_2 is reversibly adsorbed obeying the Langmuir isotherm and the heat of adsorption is evaluated to be 2.7kcal/mol. On MgO, on the other hand, no CO adsorbs whereas the oxidation of CO easily proceeds and the rate equation is expressed : γ=kPco^<0.63>Po_2^<0.29> The apparent activation energy of reaction is estimated to be 14.6 kcal/mol. CO_2, adsorbs on the surface in both the reversible and irreversible forms. The reversibly adsorbed CO_2 has 4.3 kcal/mol of activation energy for adsorption and 13 kcal/mol for desorption. The irreversibly adsorbed CO_2 can partly desorb by elevating the temperature. A large part of the surface is covered with the strongly adsorbed CO_2, the surface coverage of which is 0.86. Only a small part of the active sites (θ=4.2×10^<-4>) is available for the adsorption of oxygen and one fifth of the amount is irreversible. The mode of the transient response curves obtained in the oxidation of CO indicates a typical monotone type suggesting that the reaction rate is controlled by the surface reaction and the desorptipon of CO_2. | |||||
| 言語 | en | |||||
| 書誌情報 |
ja : 北見工業大学研究報告 巻 18, 号 1, p. 45-62, 発行日 1986-11 |
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| フォーマット | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | application/pdf | |||||
| 著者版フラグ | ||||||
| 言語 | en | |||||
| 値 | publisher | |||||
| 出版者 | ||||||
| 出版者 | 北見工業大学 | |||||
| 言語 | ja | |||||
