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首页> 外文期刊>Journal of power sources >Hydrogen production via CO_2 reforming of methane over ZrO_2-Doped Ni/ZSM-5 nanostructured catalyst prepared by ultrasound assisted sequential impregnation method
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Hydrogen production via CO_2 reforming of methane over ZrO_2-Doped Ni/ZSM-5 nanostructured catalyst prepared by ultrasound assisted sequential impregnation method

机译：超声辅助顺序浸渍法制备的ZrO_2掺杂Ni / ZSM-5纳米结构催化剂上甲烷CO_2重整制氢

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摘要

In our continuing effort to find the proper catalyst for CO_2 reforming of methane, Ni(8%)/ZSM-5-ZrO_2 with various zirconium loadings (0-15%) are synthesized via sonochemical method. All samples are characterized by XRD, FESEM, TEM, EDX, BET, FTIR and TPR-H_2 techniques. The XRD results confirm existence of NiO, ZrO_2 and ZSM-5 as crystalline phase in catalyst structure. FESEM images reveal small particle size of active metals and low numbers of agglomerations for Ni(8%)/ZrO_2(5%)-ZSM-5. BET analysis shows that addition of ZrO_2 to Ni/ZSM-5 decreases the surface area but Ni/ZrO_2(5%)-ZSM-5 has the highest surface area. TEM analysis demonstrates high dispersion of Ni nano particles over the support. EDX depicts the best active metal dispersion for the catalyst with 5% zirconia loading. The TPR results prove that the metal-support interaction is enhanced by zirconia addition, indicating the better Ni dispersion. Apart from characterization, activity tests are performed and parameters such as effect of temperature, CO and H_2 yields and H_2/CO ratio are investigated. The results show that Ni(8%)/ZrO_2(5%)-ZSM-5 has the best structural properties and the highest activity and stability in comparison with the other catalysts.
机译：在我们不断努力寻找合适的甲烷CO_2重整催化剂的过程中，通过声化学方法合成了具有不同锆含量（0-15％）的Ni（8％）/ ZSM-5-ZrO_2。所有样品均通过XRD，FESEM，TEM，EDX，BET，FTIR和TPR-H_2技术进行表征。 XRD结果证实催化剂结构中存在NiO，ZrO_2和ZSM-5作为晶相。 FESEM图像显示出活性金属的粒径小，Ni（8％）/ ZrO_2（5％）-ZSM-5的团聚数量少。 BET分析表明，向Ni / ZSM-5中添加ZrO_2会降低表面积，但Ni / ZrO_2（5％）-ZSM-5的表面积最大。 TEM分析表明Ni纳米颗粒在载体上的高度分散。 EDX描绘了具有5％氧化锆负载量的催化剂的最佳活性金属分散体。 TPR结果证明，添加氧化锆可增强金属与载体的相互作用，表明Ni分散性更好。除表征外，还进行了活性测试，并研究了温度，CO和H_2收率以及H_2 / CO比等参数的影响。结果表明，与其他催化剂相比，Ni（8％）/ ZrO_2（5％）-ZSM-5具有最佳的结构性能，最高的活性和稳定性。

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  • 来源
    《Journal of power sources》 |2014年第25期|816-827|共12页
  • 作者

    Farhad Rahmani; Mohammad Haghighi; Yaser Vafaeian; Pooya Estifaee;

  • 作者单位

    Chemical Engineering Faculty, Sahand University of Technology, P.O.Box 51335-1996, Sahand New Town, Tabriz, Iran, Reactor and Catalysis Research Center (RCRC), Sahand University of Technology, P.O.Box 51335-1996, Sahand New Town, Tabriz, Iran;

    Chemical Engineering Faculty, Sahand University of Technology, P.O.Box 51335-1996, Sahand New Town, Tabriz, Iran, Reactor and Catalysis Research Center (RCRC), Sahand University of Technology, P.O.Box 51335-1996, Sahand New Town, Tabriz, Iran;

    Chemical Engineering Faculty, Sahand University of Technology, P.O.Box 51335-1996, Sahand New Town, Tabriz, Iran, Reactor and Catalysis Research Center (RCRC), Sahand University of Technology, P.O.Box 51335-1996, Sahand New Town, Tabriz, Iran;

    Chemical Engineering Faculty, Sahand University of Technology, P.O.Box 51335-1996, Sahand New Town, Tabriz, Iran, Reactor and Catalysis Research Center (RCRC), Sahand University of Technology, P.O.Box 51335-1996, Sahand New Town, Tabriz, Iran;

  • 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

    CO_2 reforming; Syngas; Hydrogen; Ni/ZSM-5-ZrO_2; Ultrasound;

    机译：CO_2重整;合成气氢;Ni / ZSM-5-ZrO_2;超音波;

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