›› 2018, Vol. 49 ›› Issue (1): 37-41.

• 催化剂 • 上一篇    下一篇

Mn1-xAgxCo2O4尖晶石复合氧化物催化去除碳烟颗粒的研究

刘焕荣1,石会龙1,代晓东1,钱岭2,阎子峰2   

  1. 1. 中国石油大学胜利学院
    2. 中国石油大学(华东)化学工程学院
  • 收稿日期:2017-07-06 修回日期:2017-07-28 出版日期:2018-01-12 发布日期:2018-01-24
  • 通讯作者: 刘焕荣 E-mail:346873326@qq.com

COMBUSTION OF SOOT PARTICULATE OVER Mn1-XAgXCo2O4 SPINEL OXIDE

  • Received:2017-07-06 Revised:2017-07-28 Online:2018-01-12 Published:2018-01-24

摘要: 采用溶胶-凝胶法制备了Mn1-xAgxCo2O4催化剂,通过X射线衍射(XRD)、傅里叶红外吸收光谱(FT-IR)、氧气-程序升温吸附脱附(O2-TPD)和程序升温氧化(TPO)等手段对催化剂进行表征,在自制的反应装置上,利用程序升温技术对催化剂进行评价。结果表明,制备样品Mn1-xAgxCo2O4均为尖晶石型复合氧化物,且具有良好的催化碳烟燃烧活性,当x为0.4时,样品Mn0.6Ag0.4Co2O4的催化活性最好,其催化燃烧碳烟的T50 (50%碳烟的燃烧峰对应的温度)为325 ℃,比碳烟非催化燃烧时降低260 ℃。

关键词: 溶胶-凝胶法, 尖晶石氧化物, 催化, 碳烟, 燃烧

Abstract: A series of Mn1-xAgxCo2O4 spinel oxide catalysts were prepared by sol-gel method and characterized by XRD,FI-IR,O2-TPD, and TPO techniques. The performance of the catalysts was evaluated in a home-made device by temperature programme. The results showed that the as-prepared catalysts possess spinel structures and exhibit high catalytic activity for soot combustion. Mn0.6Ag0.4Co2O4 catalyst has the best activity with a T50(the temperature at which soot conversions is 50%)of 325 oC, 260 oC lower than the temperature needed in non-catalytic soot combustion.

Key words: sol-gel method, spinel oxide, catalytic, soot, combustion