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制备条件对Ru/Ce0.8Zr0.2O2催化剂上CO2甲烷化反应性能的影响

李涛,  王胜,  高典楠,  王树东

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文章导航 > 燃料化学学报（中英文）  > 2014 >  42(12): 1440-1446
李涛, 王胜, 高典楠, 王树东. 制备条件对Ru/Ce0.8Zr0.2O2催化剂上CO2甲烷化反应性能的影响[J]. 燃料化学学报（中英文）, 2014, 42(12): 1440-1446.
引用本文: 李涛, 王胜, 高典楠, 王树东. 制备条件对Ru/Ce0.8Zr0.2O2催化剂上CO2甲烷化反应性能的影响[J]. 燃料化学学报（中英文）, 2014, 42(12): 1440-1446.
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LI Tao, WANG Sheng, GAO Dian-nan, WANG Shu-dong. Effect of support calcination temperature on the catalytic properties of Ru/Ce0.8Zr0.2O2 for methanation of carbon dioxide[J]. Journal of Fuel Chemistry and Technology, 2014, 42(12): 1440-1446.
Citation: LI Tao, WANG Sheng, GAO Dian-nan, WANG Shu-dong. Effect of support calcination temperature on the catalytic properties of Ru/Ce0.8Zr0.2O2 for methanation of carbon dioxide[J]. Journal of Fuel Chemistry and Technology, 2014, 42(12): 1440-1446.
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制备条件对Ru/Ce0.8Zr0.2O2催化剂上CO2甲烷化反应性能的影响

  • 1.

    中国科学院大连化学物理研究所 洁净能源国家实验室, 辽宁 大连 116023;

  • 2.

    中国科学院大学, 北京 100049

详细信息
    通讯作者:

    王胜, 研究员, Tel: (0411)84379323; E-mail: wangsheng@dicp.ac.cn; 王树东, 研究员, Tel: (0411)84379052; E-mail: wangsd@dicp.ac.cn。

  • 中图分类号: R852.82

Effect of support calcination temperature on the catalytic properties of Ru/Ce0.8Zr0.2O2 for methanation of carbon dioxide

  • 1.

    Dalian National Laboratory for Clean Energy (DNL), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China;

  • 2.

    University of Chinese Academy of Sciences, Beijing 100049, China

    摘要
  • 摘要: 采用均相法制得Ce0.8Zr0.2O2载体,并以其为载体等体积浸渍制得一系列负载型Ru催化剂。在0.1 MPa、GHSV为10 000 h-1、H2/CO2为3.5(物质的量比)的条件下,对催化剂进行评价。借助TG-DSC、BET、H2-TPR等技术对所制备的载体和催化剂进行表征,结果表明,500 ℃焙烧的载体具有适中的比表面积和孔径并形成了Ce-Zr固溶体,与载体形成弱相互作用的Ru能够显著提高催化剂的活性,适宜的还原方式能促进活性组分的均匀分布。采用500 ℃焙烧的载体浸渍RuCl3溶液,干燥后在400 ℃焙烧,并使用水合肼和H2两次还原后的催化剂活性最高,在290 ℃时,H2转化率可达到93.57%。
    Abstract: A series of Ru/Ce0.8Zr0.2O2 catalysts were prepared by the impregnation method with Ce0.8Zr0.2O2 homoprecipitated and calcined at different temperatures as supports. The supports and the catalysts were characterized with TG-DSC, BET and H2-TPR techniques. It was shown that the Ce0.8Zr0.2O2 calcined at 500 ℃ formed Ce-Zr solid solution and had a proper surface area and pore opening and a weak interaction with Ru species, leading to a significant increase in the catalytic activity. A suitable reduction methods promoted distribution of active species. The Ru/Ce0.8Zr0.2O2 prepared with the Ce0.8Zr0.2O2 calcined at 500 ℃ showed high activity after calcination at 400 ℃ and successive reduction with H2N·NH2·H2O and H2. It gave a H2 conversion of 93.57%, approaching to the equilibrium value under the conditions of 290 ℃, 0.1 MPa, 10 000 h-1 and H2/CO2 mol ratio of 3.5.
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  • 收稿日期:  2014-06-06
  • 修回日期:  2014-08-07
  • 刊出日期:  2014-12-30

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