逆уCeO2/CuχCo1-χOδ催化剂的制备 及其CO催化氧化性能
DOI:
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

TQ032.41

基金项目:

2018上海市人才发展资金资助项目(2018019)


Preparation of Inverse уCeO2/CuχCo1-χOδ Catalysts and Their Catalytic Activities for CO Oxidation
Author:
Affiliation:

Fund Project:

2018 Shanghai Talent Development Funding Foundation (2018019)

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    采用共沉淀法-浸渍相结合的制备方法,通过XRD、BET、H2 -TPR、XPS研究了CuO 与 Co3O4 质量比(mCuO:mCo3O4)、表面CeO2负载量对逆负载 уCeO2/CuχCo1-χOδ催化剂催化氧化性能的影响。结果表明:15% CeO2/Cu0.2Co0.8Oδ 催化剂性能最佳: 由于15% CeO2/Cu0.2Co0.8Oδ 比表面积较大,两相界面较多,进而使得CeO2与Cu-Co-O固溶体相互作用较强,表面存在较多的氧空穴、Cu 和Co3 ,催化剂还原温度较低,催化活性较好。常压下,当反应温度为75℃时,CO转化率可达100% 。

    Abstract:

    A series of inverse уCeO2/CuχCo1-χOδ catalysts were prepared by combinations of co-precipitation method and impregnation method. The influences of the mass ratio of CuO∶Co3O4 and CeO2 loading on the catalytic performance in CO oxidation were investigated using XRD, BET, H2-TPR and XPS techniques. The results revealed that 15%CeO2/Cu0.2Co0.8Oδ catalyst demonstrated the best catalytic performance. It was mainly due to the large specific surface area of 15%CeO2/Cu0.2Co0.8Oδ, more interface, which led to a strong interaction between CeO2 and Cu-Co-O, the more oxygen vacancy, Cu and Co3 on the surface. The reduction temperature decrease of 15%CeO2/Cu0.2Co0.8Oδ enhanced the catalytic activity. Thus, 15% CeO2/Cu0.2Co0.8Oδ catalyst exhibited a higher catalytic activity in the carbon monoxide oxidation with 100% CO conversion at the temperature as low as 75℃ under atmospheric pressure.

    参考文献
    相似文献
    引证文献
引用本文

谷荣彩,叶丽萍.逆уCeO2/CuχCo1-χOδ催化剂的制备 及其CO催化氧化性能[J].精细化工,2020,37(3):

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2019-06-11
  • 最后修改日期:2019-08-27
  • 录用日期:2019-09-07
  • 在线发布日期: 2020-01-10
  • 出版日期: