化工进展 ›› 2015, Vol. 34 ›› Issue (09): 3345-3348,3362.DOI: 10.16085/j.issn.1000-6613.2015.09.021

• 工业催化 • 上一篇    下一篇

NiO-LaCoO3催化剂的丙烷和CO氧化性能

章轩语, 陈忠, 周颖, 邢丰, 胡庚申, 罗孟飞   

  1. 浙江师范大学化学与生命科学学院, 浙江省固体表面反应化学重点实验室, 浙江 金华 321004
  • 收稿日期:2014-11-28 修回日期:2015-03-16 出版日期:2015-09-05 发布日期:2015-09-05
  • 通讯作者: 罗孟飞,研究员。E-mail:mengfeiluo@zjnu.cn
  • 作者简介:章轩语(1992-),男,本科生。E-mail:760001249@qq.com
  • 基金资助:

    浙江省大学生新苗人才计划(2013R404042)及浙江省科技厅公益性项目(2013C31049)。

Catalytic oxidation of carbon monoxide and propane on NiO-LaCoO3

ZHANG Xuanyu, CHEN Zhong, ZHOU Ying, XING Feng, HU Gengshen, LUO Mengfei   

  1. College of Chemistry and Life Science, Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces, Zhejiang Normal University, Jinhua 321004, Zhejiang, China
  • Received:2014-11-28 Revised:2015-03-16 Online:2015-09-05 Published:2015-09-05

摘要: 采用固相反应制备了NiO-LaCoO3催化剂,考察了焙烧温度以及Ni含量对催化剂的CO和丙烷氧化活性的影响。用X射线粉末衍射、H2-程序升温还原等技术对催化剂进行了表征。结果表明,在焙烧温度为700~1000℃时,焙烧温度越高,催化剂的丙烷和CO氧化性能越差,其中700℃焙烧后的10NiO-LaCoO3催化剂的效果最好。助剂Ni能有效提高LaCoO3催化剂的丙烷和CO氧化性能,其中Ni含量为7.5%的7.5NiO-LaCoO3催化剂氧化性能最佳。研究发现催化剂的CO和丙烷氧化活性与催化剂中氧活动性具有相关性。

关键词: 催化, 催化剂载体, LaCoO3, 镍, 钙钛矿型催化剂

Abstract: A series of NiO-LaCoO3 were synthesized by solid-phase reaction method. The effects of calcination temperature and the content of Ni in catalyst on the carbon monoxide and propane oxidation performance of the as-synthesized catalysts were investigated. These catalysts were characterized by X-ray diffraction (XRD),hydrogen temperature-programmed reduction (H2-TPR) and other techniques. The results indicate that lower calcination temperature is beneficial for better catalytic performance. Among all catalysts,10NiO-LaCoO3 calcinated at 700℃ exhibited the best catalytic performance. The addition of Ni into the structure of LaCoO3 can significantly enhance the carbon monoxide and propane oxidation activity,and the optimal NiO loading is 7.5%. It was also found that the catalytic performance of catalysts is highly associated with oxygen mobility in catalysts.

Key words: catalysis, catalyst support, LaCoO3, nickel, perovskite type catalyst

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