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首页> 外文期刊>Fuel >Evaluation and characterization of Mn-Cu mixed oxide catalysts supported on TiO_2 and ZrO_2 for ethanol total oxidation
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Evaluation and characterization of Mn-Cu mixed oxide catalysts supported on TiO_2 and ZrO_2 for ethanol total oxidation

机译:TiO_2和ZrO_2负载的Mn-Cu混合氧化物催化乙醇全氧化的表征。

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摘要

MnCu/ZrO_2 T and MnCu/TiO_2 T (T= calcination temperature) catalysts were prepared by the sol-gel method with a Mn:Cu = 5:1 ratio and calcined at different temperatures, T= 673, 873 and 1073 K. The samples were characterized by X-ray diffraction, measurement of specific surface area, temperature programmed reduction, XPS and FT-IR spectroscopy. For both groups of catalysts, the increase of calcination temperature produced three effects: the segregation of phases, an increase of the crystallinity, and a phase transformation of the support. The catalytic activity was evaluated in total oxidation of ethanol, considered as model molecule of VOC. The MnCu/TiO_2 673 and MnCu/ZrO_2 873 catalysts showed the best catalytic performance, which was associated with the high dispersion of the MnO_x and CuO_x active phases. The catalytic activity of MnCu/TiO_2 673 catalyst was also favored by its high surface area.
机译:通过溶胶-凝胶法以Mn:Cu = 5:1的比例制备MnCu / ZrO_2 T和MnCu / TiO_2 T(T =煅烧温度)催化剂,并在不同的温度下煅烧(T = 673、873和1073 K)。通过X射线衍射,比表面积测量,程序升温还原,XPS和FT-IR光谱对样品进行表征。对于两组催化剂,煅烧温度的增加产生三个作用:相的分离,结晶度的增加和载体的相变。在乙醇的完全氧化中评估了催化活性,乙醇被视为VOC的模型分子。 MnCu / TiO_2 673和MnCu / ZrO_2 873催化剂表现出最佳的催化性能,这与MnO_x和CuO_x活性相的高分散性有关。 MnCu / TiO_2 673催化剂的高表面积也有利于其催化活性。

著录项

  • 来源
    《Fuel》 |2009年第11期|2122-2129|共8页
  • 作者单位

    Institute de Investigaciones en Tecnologia Quimica (INTEQUI), Universidad National de San Luis - CONICET, Chacabuco y Pedernera, 5700, San Luis, Argentina;

    Institute de Investigaciones en Tecnologia Quimica (INTEQUI), Universidad National de San Luis - CONICET, Chacabuco y Pedernera, 5700, San Luis, Argentina;

    Departamento de Quimica, Universidad Autonoma Metropolitana-lztapalapa (UAM-I), Distrito Federal, Mexico;

    Departamento de Quimica, Universidad Autonoma Metropolitana-lztapalapa (UAM-I), Distrito Federal, Mexico;

    Institute de Investigaciones en Tecnologia Quimica (INTEQUI), Universidad National de San Luis - CONICET, Chacabuco y Pedernera, 5700, San Luis, Argentina;

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

    manganese; copper; combustion; VOC;

    机译:锰;铜;燃烧;挥发性有机物;

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