| アイテムタイプ |
文献 / Documents(1) |
| 公開日 |
2021-01-25 |
| アクセス権 |
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アクセス権 |
open access |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| 出版社版DOI |
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関連識別子 |
https://doi.org/10.1252/jcej.20we198 |
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関連名称 |
10.1252/jcej.20we198 |
| 出版タイプ |
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出版タイプ |
AM |
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出版タイプResource |
http://purl.org/coar/version/c_ab4af688f83e57aa |
| タイトル |
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タイトル |
Enhancement of the Catalytic Activity Associated with Carbon Deposition Formed on NiO/γ-Al2O3 Catalysts during the Direct Dehydrogenation of Isobutane |
| タイトル別表記 |
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その他のタイトル |
Enhancement of Catalytic Activity Associated with Carbon Deposits Formed on NiO/γ-Al2O3 Catalysts during Direct Dehydrogenation of Isobutane |
| 著者 |
杉山, 茂
オリベ, ケンタ
エンドウ, シノ
ヨシダ, タシュウ
霜田, 直宏
加藤, 雅裕
カトウ, ユウキ
ニノミヤ, ワタル
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| 抄録 |
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内容記述 |
The dehydrogenation of isobutane in the presence of CO2 over NiO supported on γ-Al2O3 was examined. For comparison, Cr2O3 supported on γ-Al2O3 was also used. It is generally accepted that a catalyst used for the dehydrogenation of various alkanes will suffer catalyst deactivation due to the formation of carbon deposits. In the present study, the yield of isobutene was significantly decreased with time-on-stream due to carbon deposition when using Cr2O3(x)/γ-Al2O3, in which x indicates the loading of a corresponding oxide by weight %. However, carbon deposits also were evident on NiO(x)/γ-Al2O3, but the yield of isobutene was enhanced with time-on-stream depending on the loading (x). This indicates that the contribution of the carbon deposition in the dehydrogenation on NiO(x)/γ-Al2O3 definitely differed from that on an ordinary catalyst system such as Cr2O3(x)/γ-Al2O3. In order to confirm the advantageous effect that carbon deposition exerted on the yield of isobutene, NiO(x)/γ-Al2O3 was first treated with isobutane and then the catalytic activity was examined. As expected, it became clear that the carbon deposits formed during the pretreatment contributed to the enhancement of the yield of isobutene. The presence of a Ni-carbide species together with the metallic Ni that was converted from NiO during dehydrogenation definitely enhanced of the yield of isobutene. Although carbon deposition is generally recognized as the main cause of catalyst deactivation, the results of the present study reveal that carbon deposition is not necessarily the cause of this phenomenon. |
| キーワード |
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主題 |
Dehydrogenation |
| キーワード |
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主題 |
Isobutane |
| キーワード |
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主題 |
Nickel oxide |
| キーワード |
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主題 |
Catalyst deactivation |
| キーワード |
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主題 |
Carbon deposition |
| 書誌情報 |
en : Journal of Chemical Engineering of Japan
巻 54,
号 1,
p. 35-43,
発行日 2021-01-20
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| 収録物ID |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
00219592 |
| 収録物ID |
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収録物識別子タイプ |
NCID |
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収録物識別子 |
AA00709658 |
| 出版者 |
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出版者 |
The Society of Chemical Engineers, Japan |
| 権利情報 |
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権利情報 |
Copyright © 2021 The Society of Chemical Engineers, Japan |
| EID |
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識別子 |
371901 |
| 言語 |
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言語 |
eng |
jcej_54_1_35.pdf (1.3 MB)
