| アイテムタイプ |
文献 / Documents(1) |
| 公開日 |
2018-09-14 |
| 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.17we311 |
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関連名称 |
10.1252/jcej.17we311 |
| 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 |
Introduction of a Small Amount of Chromium to Enhance the Catalytic Performance of SBA-15 for the Oxidative Dehydrogenation of Isobutane to Isobutene |
| 著者 |
カトウ, ユウキ
ミス, ヒサノブ
シマヅ, ショウ
加藤, 雅裕
ニノミヤ, ワタル
杉山, 茂
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| 抄録 |
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内容記述 |
Various solid oxide catalysts are active for the oxidative dehydrogenation of propane, but achieve yields of less than 2% when these were used for the oxidative dehydrogenation of isobutane to isobutene. An improved isobutene yield of 8% was obtained in the oxidative dehydrogenation of isobutane by using a folded-sheet mesoporous material (FSM-16) and mesoporous molecular sieve (MCM-41), with or without chromium via impregnation or template-ion exchange methods. Further activity enhancement, however, could not be attained. In the present study, chromium cations were introduced into the framework of SBA-15 using a direct synthesis method by mixing chromium nitrate with tetraethylorthosilicate in an aqueous solution with an initial pH of 1.5 and subsequent hydrothermal treatment. Loading the resultant catalyst, SBA-15, with a small amount of chromium (1.84 wt% Cr-SBA-15) increased the isobutene yield (15.4%) at 723 K, while a previous report showed that chromium oxide supported on SBA-15 (CrOx/SBA-15) prepared via incipient wetness impregnation had a lower isobutene yield (11%) at 813 K. To explain this improvement, the catalysts were characterized using X-ray diffraction, transmission electron microscopy, N2 adsorption-desorption, and NH3 temperature-programmed desorption. Cr-SBA-15 was found to have a large specific surface area (1,610 m2/g), although the structural and acidic nature of the catalyst was similar to the general properties of other mesoporous silicas. The conversion of Cr3+ species into Cr6+ on Cr-SBA-15 with the large specific surface area could affect the improvement of the oxidative dehydrogenation of isobutane to isobutene. |
| キーワード |
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主題 |
Oxidative Dehydrogenation |
| キーワード |
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主題 |
Isobutane |
| キーワード |
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主題 |
SBA-15 |
| キーワード |
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主題 |
Chromium |
| 書誌情報 |
en : Journal of Chemical Engineering of Japan
巻 51,
号 5,
p. 400-406,
発行日 2018-05-20
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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 |
© 2018 The Society of Chemical Engineers, Japan |
| EID |
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識別子 |
335164 |
| 言語 |
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言語 |
eng |
jcej_51_5_400.pdf (481 KB)
