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首页> 外文期刊>International journal of hydrogen energy >Ammonia synthesis over yttrium-doped barium zirconate and cerate-based perovskite-type oxide supported ruthenium. catalysts
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Ammonia synthesis over yttrium-doped barium zirconate and cerate-based perovskite-type oxide supported ruthenium. catalysts

机译：钇掺杂锆酸钡和铈基钙钛矿型氧化物负载的钌上的氨合成。催化剂

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摘要

The performance of yttrium-doped barium zirconate and cerate-based perovskite-type oxide supported ruthenium catalysts for the thermal catalytic NH3 synthesis process has been studied; these materials are expected to be applied as electrode catalysts for the electrochemical synthesis process of ammonia (NH3), namely, NH3 electrolysis. The BaZr0.9Y0.1O3-delta (BZY10, with Y substituting for 10 mol% Zr in BaZrO3)-supported Ru catalyst (Ru/BZY10) exhibited a high NH3 synthesis rate (4.00 mmol h(-1) g(-cat.)(-1)) under the following reaction conditions: S.V. = 36 L h(-1) g(-cat.)(-1) T = 400 degrees C, P = 0.1 MPa. Furthermore, the calcination at 1200 degrees C of BZY10 enhanced the catalytic performance of Ru/BZY10 (4.63 mmol h(-1) g(-cat).(-1) at 400 degrees C). Considering the NH3 synthesis rate per Ru amount, the optimal amount of Ru loading was 2.0 wt%. Furthermore, the addition of K and Cs to Ru/BZY10 can further improve the catalyst performance, which is found to be comparable to that of the other reported catalysts and is due to the electron-donating effect to active sites of Ru species. Based on various characterizations, we conclude that the particle size of Ru, the presence of BaCO3 and BaO crystalline phases, and the coverage of Ba species strongly affect the catalyst performance. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
机译：研究了钇掺杂锆酸钡和铈酸盐钙钛矿型氧化物负载钌催化剂在NH3热催化合成中的性能。这些材料有望用作氨（NH3）的电化学合成过程即NH3电解的电极催化剂。 BaZr0.9Y0.1O3-δ（BZY10，Y取代BaZrO3中的10摩尔％Zr）负载的Ru催化剂（Ru / BZY10）显示出较高的NH3合成速率（4.00 mmol h（-1）g（-cat。 ）（-1））在以下反应条件下：SV = 36 L h（-1）g（-cat。）（-1）T = 400摄氏度，P = 0.1 MPa。此外，BZY10在1200摄氏度下的煅烧提高了Ru / BZY10的催化性能（在400摄氏度下为4.63 mmol h（-1）g（-cat）。（-1））。考虑到每Ru量的NH 3合成速率，Ru负载的最佳量为2.0重量％。此外，向Ru / BZY10中添加K和Cs可以进一步改善催化剂性能，这与其他报道的催化剂具有可比性，并且归因于对Ru物种活性位点的供电子作用。基于各种表征，我们得出结论，Ru的粒径，BaCO3和BaO结晶相的存在以及Ba物种的覆盖率都强烈影响催化剂的性能。 （C）2017氢能出版物有限公司。由Elsevier Ltd.出版。保留所有权利。

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  • 来源
    《International journal of hydrogen energy》 |2017年第50期|29745-29755|共11页
  • 作者

    Shimoda Naohiro; Kimura Yutaka; Kobayashi Yusuke; Kubota Jun; Satokawa Shigeo;

  • 作者单位

    Seikei Univ, Fac Sci & Technol, Dept Mat & Life Sci, 3-3-1 Kichijoji Kitamachi, Musashino, Tokyo 1808633, Japan;

    Seikei Univ, Fac Sci & Technol, Dept Mat & Life Sci, 3-3-1 Kichijoji Kitamachi, Musashino, Tokyo 1808633, Japan;

    Seikei Univ, Fac Sci & Technol, Dept Mat & Life Sci, 3-3-1 Kichijoji Kitamachi, Musashino, Tokyo 1808633, Japan;

    Fukuoka Univ, Dept Chem Engn, Jonan Ku, 8-19-1 Nanakuma, Fukuoka 8140180, Japan;

    Seikei Univ, Fac Sci & Technol, Dept Mat & Life Sci, 3-3-1 Kichijoji Kitamachi, Musashino, Tokyo 1808633, Japan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Ammonia synthesis; Hydrogen carrier; Ruthenium; Perovskite-type oxides;

    机译：氨合成氢载体钌钙钛矿型氧化物;

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