| 钡修饰Ir/SiO2催化剂对氨分解促进作用的研究 |
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| 引用本文： | 倪平,储伟,罗仕忠,王晓东,张涛.钡修饰Ir/SiO2催化剂对氨分解促进作用的研究[J].合成化学,2007,15(4):407-411,416. |
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| 作者姓名： | 倪平 储伟 罗仕忠 王晓东 张涛 |
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| 作者单位： | 1. 四川大学,化工学院,四川,成都,610065
2. 中国科学院,大连化学物理研究所,辽宁,大连,116023 |
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| 基金项目： | 国家自然科学基金
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中国科学院大连化学物理研究所和四川大学合作资助项目
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国家教育部新世纪人才资助项目 |
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| 摘 要： | 研究了浸渍法制备的Ba修饰S iO2担载型铱(Ir)基催化剂(Ba-Ir/S iO2)在氨催化分解模型反应的作用。结果表明Ba的添加显著提高了催化剂的活性和稳定性。采用H2-TPR和H2-TPD对Ba-Ir/SiO2进行分析和研究,结果显示助催化剂Ba和活性催化组分Ir之间发生了强相互作用。Ba-Ir/SiO2在氨催化分解模型反应中的主要活性物种是零价态的Ir。
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| 关 键 词： | 氨分解 助剂 铱 钡 催化剂 |
| 文章编号： | 1005-1511（2007）04-0407-05 |
| 收稿时间： | 2007-03-13 |
| 修稿时间： | 2007-03-132007-04-02 |
Study on the Decomposition of Ammonia by Ir/SiO2 Catalyst with Barium Promoter |
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| NI Ping,CHU Wei,LUO Shi-zhong,WANG Xiao-dong,ZHANG Tao.Study on the Decomposition of Ammonia by Ir/SiO2 Catalyst with Barium Promoter[J].Chinese Journal of Synthetic Chemistry,2007,15(4):407-411,416. |
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| Authors: | NI Ping CHU Wei LUO Shi-zhong WANG Xiao-dong ZHANG Tao |
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| Institution: | 1. Department of Chemical Engineering, Siehuan University, Chengdu 610065, China; 2. Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China |
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| Abstract: | Novel Ir/SiO2 catalysts with barium promoter Ba-Ir/SiO2 were prepared and studied in ammonia decomposition.Ba-Ir/SiO2 exhibited a higher catalytic activity and a better stability than Ir/SiO2.The Ba-Ir/SiO2 were characterized by H2-TPR and H2-TPD.The addition of barium to silica supported Ir catalyst could improve the dispersion and restrain the sintering of active component.The active component of Ba-Ir/SiO2 in ammonia decomposition is iridium of zero valence. |
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| Keywords: | ammonia decomposition promoter iridium barium catalyst |
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