| ID | 110026 |
| Author |
Ehiro, Takuya
Department of Chemical Science and Technology, Tokushima University
Misu, Hisanobu
Department of Chemical Science and Technology, Tokushima University
Nitta, Shinya
Department of Chemical Science and Technology, Tokushima University
Baba, Yuzo
Department of Applied Chemistry, Graduate School of Science and Technology, Tokushima University
Katoh, Masahiro
Department of Applied Chemistry, Graduate School of Science and Technology, Tokushima University
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Katou, Yuuki
Otake Research Laboratories, Mitsubishi Rayon Co. Ltd.
Ninomiya, Wataru
Otake Research Laboratories, Mitsubishi Rayon Co. Ltd.
Sugiyama, Shigeru
Department of Applied Chemistry, Graduate School of Science and Technology, Tokushima University|Department of Resource Circulation Engineering, Center for Frontier Research of Engineering, Tokushima University
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|
| Keywords | Oxidative dehydrogenation
Isobutane
Calcium hydroxyapatite
Acidic property
Basic property
|
| Content Type |
Journal Article
|
| Description | Catalytic activities of calcium hydroxyapatite (HAp) and β-type tricalcium phosphate (β-TCP) were examined for use in the oxidative dehydrogenation (ODH) of isobutane. β-TCP was catalytically inactive for the ODH of isobutane, but stoichiometric HAp afforded a high isobutene yield (5.6%). The isobutane conversion and isobutene selectivity of HAp depended on the atomic ratio of Ca/P. HAp with Ca/P = 1.67 showed the highest isobutene selectivity and isobutene yield among the HAp catalysts with different Ca/P ratios. The characterization of the acidic-basic properties showed that these properties affect the catalytic performance of HAp, and that its basicity is necessary for high catalytic activity. To improve the catalytic activities of calcium phosphates, they were impregnated with Cr. Despite a much lower surface area for β-TCP, Cr-impregnated β-TCP showed a higher isobutene yield (up to 8.4%) than that of Cr-impregnated HAp. The results of the XPS measurement showed that the Cr3+ species on calcium phosphates, owing to basicity, worked as active sites in the ODH of isobutane.
|
| Journal Title |
Journal of Chemical Engineering of Japan
|
| ISSN | 00219592
|
| NCID | AA00709658
|
| Volume | 50
|
| Issue | 2
|
| Start Page | 122
|
| End Page | 131
|
| Sort Key | 122
|
| Published Date | 2017
|
| Remark | Copyright © 2017 The Society of Chemical Engineers, Japan
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| EDB ID | |
| DOI (Published Version) | |
| URL ( Publisher's Version ) | |
| FullText File | |
| language |
eng
|
| TextVersion |
Author
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| departments |
Science and Technology
|
