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Evaluation of the First order Kinetic Approximation in Heterogeneous Catalysis
https://kitami-it.repo.nii.ac.jp/records/6617
https://kitami-it.repo.nii.ac.jp/records/6617c1b81fd8-c18b-4512-bba9-af348d58845e
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
19-1-7.pdf (6.6 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 | Evaluation of the First order Kinetic Approximation in Heterogeneous Catalysis | |||||
| 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 |
Tohru, KANNO
× Tohru, KANNO× Takuma, KIMURA× Takanobu, ONOSE× Masatoshi, HAYASHI× Masayoshi, KOBAYASHI |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The validity of first order kinetic approximation in heterogeneous catalysis has been evaluated by using the transient response method. As an example of a solid catalysed reaction, the oxidation of carbon monoxide has been studied on four different metal oxides MnO_2, Cr_2O_3, Pb_3O_4, and ZnO. The steady stale rate analysis apparently met first order kinetics with respect to the concentration of CO for all the catalysts. The Arrhenius plots of the apparent first order rate constant obtained clearly gave a good straight line and estimated the apparent activation energy of the reactions on each catalyst. A simple first order kinetic model due to surface reaction controlling is proposed to explain the transient state and the steady stale of reaction. Based on the models proposed, the transient response curves of carbon dioxide caused by the stepwise change in the concentration are simulated by using personal computers The results exhibit a large deviation of the calculated curves from the experimental ones especially at the transient state whereas the steady state values of both are in good agreement. Four different dual path models have separately been proposed for each of the four catalysts. The models consistently explain the characteristic mode of the transient response curves obtained for each catalyst and under wide experimental conditions. The activation energy of the slowest elementary step is evaluated for all the catalysts, and some of the values deviate largely from those estimated from the apparent first order kinetic models. | |||||
| 言語 | en | |||||
| 書誌情報 |
ja : 北見工業大学研究報告 巻 19, 号 1, p. 71-88, 発行日 1987-11 |
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| 内容記述タイプ | Other | |||||
| 内容記述 | application/pdf | |||||
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| 言語 | en | |||||
| 値 | publisher | |||||
| 出版者 | ||||||
| 出版者 | 北見工業大学 | |||||
| 言語 | ja | |||||
