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  1. B200 工学部/工学研究科
  2. B200a 雑誌掲載論文
  3. 学術雑誌

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/2237/00033228
9fe5df8c-9bf8-435c-9033-3b37aff492e3
名前 / ファイル ライセンス アクション
Revised Revised Manuscript (1.3 MB)
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

WEKO 102685

en Murata, Kazumasa

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Ohyama, Junya

× Ohyama, Junya

WEKO 102686

en Ohyama, Junya

Search repository
Yamamoto, Yuta

× Yamamoto, Yuta

WEKO 102687

en Yamamoto, Yuta

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Arai, Shigeo

× Arai, Shigeo

WEKO 102688

en Arai, Shigeo

Search repository
Satsuma, Atsushi

× Satsuma, Atsushi

WEKO 102689

en Satsuma, Atsushi

Search repository
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 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
内容記述タイプ Abstract
内容記述
内容記述 ファイル公開:2021-08-07
言語 ja
内容記述タイプ Other
出版者
言語 en
出版者 ACS Publications
言語
言語 eng
資源タイプ
資源タイプresource http://purl.org/coar/resource_type/c_6501
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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