| アイテムタイプ |
itemtype_ver1(1) |
| 公開日 |
2026-03-02 |
| タイトル |
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タイトル |
Comprehensive kinetic analysis of ammonia synthesis over a Co/BaO/MgO catalyst under milder conditions: Integral reactor modeling via Langmuir-Hinshelwood mechanism |
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言語 |
en |
| 著者 |
El-Shafie, Mostafa
Yajima, Tomoyuki
Naito, Takahiro
Sato, Katsutoshi
Tsuda, Shoichi
Inazu, Koji
Nagaoka, Katsutoshi
Kawajiri, Yoshiaki
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| アクセス権 |
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アクセス権 |
embargoed access |
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アクセス権URI |
http://purl.org/coar/access_right/c_f1cf |
| 権利 |
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|
権利情報 |
© 2025. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ |
|
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 |
Ammonia (NH₃), synthesized from green hydrogen produced via renewable energy sources, is increasingly regarded as a critical carbon-free hydrogen carrier, with significant potential to support the global transition to sustainable energy systems and the achievement of carbon neutrality. To achieve this goal, a novel catalyst that consists of Co, BaO, and MgO has been recently reported, enabling NH3 synthesis under lower and milder reaction conditions than those for the conventional Haber-Bosch process. In this study, the reaction rates of the Co/BaO/MgO catalyst were experimentally measured over a wide range of pressures (1–7 MPa) and temperatures (305–380 °C), allowing us to assess the influence of the backward reaction. Furthermore, two Langmuir-Hinshelwood (LH) kinetic models, 4-parameter and 8-parameter rate expressions, were developed and implemented in an integral reactor model to describe the ammonia synthesis rate. The results of both LH models showed good agreement with the experimental data within the error of ±20 %, which gives high R2 values with a smaller number of parameters compared to the Nielsen rate law. The proposed approach, which utilizes an integral reactor model with LH kinetics, can be a powerful tool for the design of industrial reactors for ammonia synthesis. |
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言語 |
en |
| 出版者 |
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出版者 |
Elsevier |
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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/10.1016/j.cej.2025.168922 |
| 収録物識別子 |
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収録物識別子タイプ |
PISSN |
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収録物識別子 |
1385-8947 |
| 書誌情報 |
en : Chemical Engineering Journal
巻 523,
p. 168922,
発行日 2025-11-01
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| ファイル公開日 |
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|
日付 |
2027-11-01 |
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日付タイプ |
Available |
Marked_version_Co-BaO-MgO_catalyst.pdf (2.4 MB)
