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Competitive Reconfiguration of Adsorbed Species on Heterogeneous Solid Surfaces*
https://kitami-it.repo.nii.ac.jp/records/6607
https://kitami-it.repo.nii.ac.jp/records/66072d2f95a0-ed67-431e-bdd9-be5627112518
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
18-2-7.pdf (6.5 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 | Competitive Reconfiguration of Adsorbed Species on Heterogeneous Solid Surfaces* | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | departmental bulletin paper | |||||
| 著者 |
Yasuyuki, KONISHI
× Yasuyuki, KONISHI× Tohru, KANNO× Shinichi, OIKAWA× Toshihide, HIDA× Masayoshi, KOBAYASHI |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The competitive reconfiguration behavior of adsorbed species has been studied on the heterogeneous solid surfaces of Cr_2O_3, Ag and MgO by using the transient response method, and the characteristic anomalous transient behavior has been observed depending on the catalysts. 0n Cr_2O_3, in the temperature range 131〜163℃, the reduction of surface removing surface oxygen works to increase the degree of coordinated unsaturation of the surface sites, and the adsorption of oxygen on the reduced surface decreases the degree of it inducing the rapid desorption of CO_2 and CO_2 preadsorbed. 0n Ag, in the temperature range 80〜120℃, the desorption of CO_2 adsorbed on the oxidized surface is accelerated when H_2 is adsorbed on the surface. 0n MgO, the single gas adsorption of CO or CO_2 obeys a Langmuir isotherm on the same active sites such as coordinatively unsaturated surface O^2 ions or paired surface ions Mg^<2+>O^<2->, in the temperature range 290-320℃. The desorption response of CO is extremely affected by the second component CO_2 mixed in the gas phase, while the desorption of CO_2 is not influenced by the ambient gas. The adsorbed CO is retained on the surface by the attraction force of adsorbed CO_2, and its amount decreases with increasing concentration of coexisting CO_2. The temperature programmed desorption spectra of the CO retained on the surface give a single peak and satisfy the first order desorption kinetics. | |||||
| 書誌情報 |
北見工業大学研究報告 巻 18, 号 2, p. 195-210, 発行日 1987-03 |
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| フォーマット | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | application/pdf | |||||
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| 値 | publisher | |||||
| 出版者 | ||||||
| 出版者 | 北見工業大学 | |||||
