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首页> 外文会议>8th China international nanoscience and technology symposium >Study on methane conversion to synthesis gas over nano Pt/MgO catalysts Ⅲ. Influence of the precursors on the physico-chemical properties of the catalysts
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Study on methane conversion to synthesis gas over nano Pt/MgO catalysts Ⅲ. Influence of the precursors on the physico-chemical properties of the catalysts

机译：纳米Pt / MgO催化剂上甲烷转化为合成气的研究Ⅲ。前体对催化剂理化性质的影响

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摘要

Using different precursors, two series of nano Pt/MgO catalysts (Pt-Ⅱ and Pt-Ⅳ, respectively) loaded with Pt in a wide range from 0.1 wt% to 2.2 wt% were prepared by using wet impregnation methods. The physico-chemical properties of catalysts were characterized by using BET, XRD, TPD-CO2, and other techniques. The results revealed that the precursor and content of Pt, especially the acid/base properties of the precursor solution, had a big influence on the structure, and surface properties of the catalysts. The loaded Pt is in metallic state in all the catalysts calcined at 1073 K. The Pt-Ⅱ catalysts had larger surface areas and relatively narrow pore size distribution range. The MgO crystals in the calcined Pt-Ⅱ-3 catalyst had more regular structure than that in the calcined Pt-Ⅳ-3 catalyst.
机译：利用不同的前驱体，采用湿法浸渍法制备了两类纳米Pt / MgO催化剂（分别为Pt-Ⅱ和Pt-Ⅳ），其负载的Pt范围为0.1 wt％至2.2 wt％。通过使用BET，XRD，TPD-CO2和其他技术表征了催化剂的物理化学性质。结果表明，Pt的前驱体和含量，尤其是前驱体溶液的酸/碱性质，对催化剂的结构和表面性质影响很大。在1073 K下煅烧的所有催化剂中，负载的Pt均为金属态。Pt-Ⅱ催化剂具有较大的表面积和相对窄的孔径分布范围。煅烧的Pt-Ⅱ-3催化剂中的MgO晶体比煅烧的Pt-Ⅳ-3催化剂中的MgO晶体具有更规则的结构。

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  • 来源
  • 会议地点 Xiangtan(CN);Xiangtan(CN)
  • 作者

    Min Yang; Helmut Papp;

  • 作者单位

    School of Environmental and Chemical Engineering,Dalian Jiaotong University.Dalian 116028,China Institute of Technical Chemistry,University of Leipzig,04103 Leipzig,Germany;

    Institute of Technical Chemistry,University of Leipzig,04103 Leipzig,Germany;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 特种结构材料;
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