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Methane Combustion over Pd/Al2O3 Catalysts in the Presence of Water: Effects of Pd Particle Size and Alumina Crystalline Phase
http://hdl.handle.net/2237/00033228
http://hdl.handle.net/2237/000332289fe5df8c-9bf8-435c-9033-3b37aff492e3
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
Revised Manuscript (1.3 MB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2020-12-23 | |||||
| タイトル | ||||||
| タイトル | Methane Combustion over Pd/Al2O3 Catalysts in the Presence of Water: Effects of Pd Particle Size and Alumina Crystalline Phase | |||||
| 言語 | en | |||||
| 著者 |
Murata, Kazumasa
× Murata, Kazumasa× Ohyama, Junya× Yamamoto, Yuta× Arai, Shigeo× Satsuma, Atsushi |
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| アクセス権 | ||||||
| アクセス権 | open access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||
| 権利 | ||||||
| 言語 | en | |||||
| 権利情報 | “This document is the Accepted Manuscript version of a Published Work that appeared in final form in [ACS Catalysis], copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see [https://pubs.acs.org/articlesonrequest/AOR-FMMPHWMWGCNQJQRK5F65].” | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | methane combustion | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | Pd catalyst | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | alumina | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | particle size | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | crystalline phase | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The effects of the Pd particle size and the Al2O3 crystalline phase of Pd/Al2O3 catalysts on the CH4 combustion in the presence of H2O were investigated. According to X-ray absorption fine structure (XAFS) measurements, it was revealed that, during the CH4 combustion, the Pd nanoparticles existed on the Al2O3 support as a PdO phase, while the crystallinity of PdO depended on the Pd particle size. On the basis of X-ray diffraction (XRD), amorphous PdO particles with a size of <7 nm exhibited low activity for CH4 combustion. In contrast, as the Pd particle size increased, larger crystalline PdO particles (>7 nm) were formed, which were highly active for CH4 combustion. Comparing the effects of the different Al2O3 crystalline phases, Pd/α-Al2O3 was proved to be more resistant to deactivation by H2O than Pd/γ-Al2O3 and Pd/θ-Al2O3. Moreover, according to H2O temperature-programmed desorption (TPD) and infrared (IR) measurements, since α-Al2O3 was relatively hydrophobic compared to γ-Al2O3 and θ-Al2O3, a faster and reversible adsorption/desorption of OH/H2O species was achieved, while the H2O poisoning on PdO species in the vicinity was limited. | |||||
| 言語 | en | |||||
| 内容記述 | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | ファイル公開：2021-08-07 | |||||
| 言語 | ja | |||||
| 出版者 | ||||||
| 出版者 | ACS Publications | |||||
| 言語 | en | |||||
| 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 | journal article | |||||
| 出版タイプ | ||||||
| 出版タイプ | AM | |||||
| 出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
| DOI | ||||||
| 関連タイプ | isVersionOf | |||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | https://doi.org/10.1021/acscatal.0c02050 | |||||
| ISSN（print） | ||||||
| 収録物識別子タイプ | PISSN | |||||
| 収録物識別子 | 2155-5435 | |||||
| 書誌情報 |
en : ACS Catalysis 巻 10, 号 15, p. 8149-8156, 発行日 2020-08-07 |
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| 著者版フラグ | ||||||
| 値 | author | |||||
