• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Catalytic properties of gamma-Al2O3 supported Pt-FeOx catalysts for complete oxidation of formaldehyde at ambient temperature
【24h】

Catalytic properties of gamma-Al2O3 supported Pt-FeOx catalysts for complete oxidation of formaldehyde at ambient temperature

机译：γ-Al2O3负载型Pt-Feox催化剂的催化性能，用于在环境温度下完全氧化甲醛

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A series of gamma-Al2O3 supported Pt-FeOx catalysts (Pt-FeOx/Al2O3) with different Fe/Pt atom ratios were prepared, and their catalytic properties were investigated in the oxidation of formaldehyde. It was found that the catalytic activities of Pt-FeOx/Al2O3 catalysts are varied with the change of Fe/Pt ratios. Among them, the sample with a Fe/Pt ratio of 1.0 exhibits the highest activity, which can efficiently convert formaldehyde to CO2 at ambient temperature. The catalytic activity of the Pt-FeOx/Al2O3 catalyst can be further improved by the addition of water vapor into the feed stream. A variety of characterization results showed that both Pt nanoparticles and FeOx species are highly dispersed on the surface of the gamma-Al2O3 support. Changing Fe/Pt ratios could influence the chemical states and the redox properties of Pt and Fe species. The catalysts with appropriate Fe/Pt ratios have more accessible active sites, i.e., the Pt-O-Fe species, which are located at the boundaries between FeOx and Pt nanoparticles, thus showing high activity for the oxidation of formaldehyde under ambient conditions.
机译：制备了一系列具有不同Fe / Pt原子比的γ-Al2O3支持的Pt-Feox催化剂（Pt-Feox / Al 2 O 3），并在甲醛氧化中研究了它们的催化性质。发现Pt-Feox / Al 2 O 3催化剂的催化活性随Fe / Pt比的变化而变化。其中，具有1.0的Fe / Pt比的样品具有最高的活性，可以在环境温度下有效地将甲醛转化为CO 2。通过将水蒸气添加到进料流中，可以进一步提高Pt-Feox / Al 2 O 3催化剂的催化活性。各种表征结果表明，Pt纳米颗粒和飞氧颗粒在γ-Al2O3载体的表面上高度分散。改变Fe / Pt比率可以影响化学态和PT和Fe种的氧化还原性能。具有适当的Fe / Pt比率的催化剂具有更远的活性位点，即PT-O-Fe物种，其位于Feox和Pt纳米颗粒之间的边界处，因此在环境条件下显示出甲醛氧化的高活性。

著录项

  • 来源
    《RSC Advances》 |2015年第126期|共7页
  • 作者

    Cui Weiyi; Yuan Xiaoling; Wu Ping; Zheng Bin; Zhang Wenxiang; Jia Mingjun;

  • 作者单位

    Jilin Univ Coll Chem Key Lab Surface &

    Interface Chem Jilin Prov Changchun 130021 Peoples R China;

    Jilin Univ Coll Chem Key Lab Surface &

    Interface Chem Jilin Prov Changchun 130021 Peoples R China;

    Jilin Univ Coll Chem Key Lab Surface &

    Interface Chem Jilin Prov Changchun 130021 Peoples R China;

    Jilin Univ Coll Chem Key Lab Surface &

    Interface Chem Jilin Prov Changchun 130021 Peoples R China;

    Jilin Univ Coll Chem Key Lab Surface &

    Interface Chem Jilin Prov Changchun 130021 Peoples R China;

    Jilin Univ Coll Chem Key Lab Surface &

    Interface Chem Jilin Prov Changchun 130021 Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号