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Fabrication of porous carbon spheres and as support for the application of low-temperature CO oxidation

机译：多孔碳球的制造并作为低温CO氧化应用的载体

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摘要

In this paper, a series of CSs (CSs was the abbreviation of carbon sphere) was synthesized by surfactants-assisted hydrothermal method, and these CSs were used as support to load metal active species for low-temperature oxidation of CO. By adjusting surfactant type and content, hydrothermal time and temperature, the optimal prepared condition of catalyst were achieved: polyvinylpyrrolidone (PVP) content=3%, hydrothermal time = 7 h, and hydrothermal temperature = 180 degrees C. Contrasted Pd-Fe/CSs catalyst with Pd-Fe/CSs-PVP-S (Pd-Fe/CSs-PVP-S was abbreviation for the optimal catalyst) catalyst, it was discovered that CSs-PVP-S owned smaller particle size and higher surface area than CSs. The surface of Pd-Fe/CSs-PVP-S catalyst had rich active oxygen species, more FeO(OH) species and more tetravalent Pd species than the Pd-Fe/CSs catalyst, which vividly demonstrated that the Pd-Fe/CSs-PVP-S catalyst displayed superior activity than Pd-Fe/CSs. (C) 2015 Elsevier B.V. All rights reserved.
机译：本文通过表面活性剂辅助水热法合成了一系列CSs（CSs是碳球的缩写），并将其用作负载金属活性物种的载体，用于CO的低温氧化。含量，水热时间和温度，催化剂的最佳制备条件为：聚乙烯吡咯烷酮（PVP）含量= 3％，水热时间= 7 h，水热温度= 180℃。Pd-Fe / CSs催化剂与Pd-的对比Fe / CSs-PVP-S（Pd-Fe / CSs-PVP-S是最佳催化剂的缩写）催化剂，发现CSs-PVP-S比CSs具有更小的粒径和更大的表面积。 Pd-Fe / CSs-PVP-S催化剂的表面比Pd-Fe / CSs催化剂具有丰富的活性氧种类，更多的FeO（OH）种类和更多的四价Pd种类，这生动地证明了Pd-Fe / CSs- PVP-S催化剂显示出比Pd-Fe / CSs更好的活性。 （C）2015 Elsevier B.V.保留所有权利。

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  • 来源
    《Applied Surface Science》 |2015年第30期|100-108|共9页
  • 作者

    Han Weiliang; Tang Zhicheng; Zhang Peng; Lu Gongxuan;

  • 作者单位

    Chinese Acad Sci, Lanzhou Inst Chem Phys, Natl Engn Res Ctr Fine Petrochem Intermediates, Lanzhou 730000, Peoples R China;

    Chinese Acad Sci, Lanzhou Inst Chem Phys, Natl Engn Res Ctr Fine Petrochem Intermediates, Lanzhou 730000, Peoples R China;

    Chinese Acad Sci, Lanzhou Inst Chem Phys, Natl Engn Res Ctr Fine Petrochem Intermediates, Lanzhou 730000, Peoples R China;

    Chinese Acad Sci, Lanzhou Inst Chem Phys, Natl Engn Res Ctr Fine Petrochem Intermediates, Lanzhou 730000, Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Carbon sphere; Surfactants-assisted hydrothermal method; CO oxidation; Noble metal catalyst;

    机译：碳球;表面活性剂辅助水热法;CO氧化;贵金属催化剂;

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