| アイテムタイプ |
itemtype_ver1(1) |
| 公開日 |
2025-10-09 |
| タイトル |
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タイトル |
Encapsulated Platinum–Tin Nanoparticles in Silicalite-1 Zeolite for Methylcyclohexane Dehydrogenation |
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言語 |
en |
| 著者 |
Shi, Wei
Oda, Akira
Yamamoto, Yuta
Harada, Seio
Ohtsu, Takeshi
Sawabe, Kyoichi
Satsuma, Atsushi
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| アクセス権 |
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アクセス権 |
open access |
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アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 権利 |
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|
権利情報 |
This document is the Accepted Manuscript version of a Published Work that appeared in final form in [ACS Sustainable Chemistry and Engineering], 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-JVZXRRI8UU8KGYCUPTPF].” |
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言語 |
en |
| 内容記述 |
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内容記述タイプ |
Abstract |
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内容記述 |
Catalytic dehydrogenation of methylcyclohexane (MCH) is of great importance for hydrogen storage and transportation, but currently used Pt-based nanoparticle catalysts still suffer from insufficient activity, low selectivity, and short-term stability. In this study, we encapsulated Pt–Sn nanoparticles into the silicalite-1 (S-1) matrix and incorporated Sn into the zeolite framework through one-pot hydrothermal synthesis to overcome the above problems. These Pt–Sn bimetallic catalysts were designed for the first time with a high Sn content (2.8–3.9 wt %, Sn/Pt ratio = 6–8) in zeolite mother gel for MCH dehydrogenation. The introduction of Sn significantly improved the activity and durability of Pt@S-1. Especially, the PtSn@S-1 (Sn/Pt ratio = 6) catalyst showed high MCH conversion (>80% for 2 h) and toluene (TOL) selectivity (∼100%) without cofeeding H2. Even after a long-term stability test for 33 h under a weight hourly space velocity (WHSV) of 120,000 mL/g/h, no obvious deactivation was observed, and this catalyst retained a superior H2 evolution rate normalized with a surface Pt content of 1343 mmolH2/gPt/min. The structure–catalytic property relationship of PtSn@S-1 catalysts was systematically studied. Upon Sn introduction, PtOx species on Pt@S-1 were transformed into the PtSn alloy. With the further increase of the Sn/Pt ratio from 1 to 6, Sn was gradually incorporated into the zeolite framework, and this PtSn alloy evolved into a core–shell structure with a Pt core and a Sn shell. Despite the reduced proportion of surface Pt, these unique structures enabled the modification of the Pt local structure, promoted TOL desorption, and enhanced the stability of Pt–Sn nanoparticles, therefore achieving high activity, selectivity, and durability for MCH dehydrogenation. |
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言語 |
en |
| 出版者 |
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出版者 |
ACS Publications |
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言語 |
en |
| 言語 |
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言語 |
eng |
| 資源タイプ |
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資源タイプresource |
http://purl.org/coar/resource_type/c_6501 |
|
タイプ |
journal article |
| 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 |
| 関連情報 |
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関連タイプ |
isVersionOf |
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識別子タイプ |
DOI |
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関連識別子 |
https://doi.org/10.1021/acssuschemeng.4c09762 |
| 収録物識別子 |
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収録物識別子タイプ |
EISSN |
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収録物識別子 |
2168-0485 |
| 書誌情報 |
en : ACS Sustainable Chemistry and Engineering
巻 13,
号 9,
p. 3608-3621,
発行日 2025-03-10
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| ファイル公開日 |
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|
日付 |
2026-03-10 |
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日付タイプ |
Available |
ACSsustainable_just-accepted.pdf (3.6 MB)
