Jump to main content
Jump to site search


Three-dimensionally ordered macroporous K0.5MnCeOx/SiO2 catalysts: Facile preparation and fine catalytic performances for soot combustion

Abstract

A series of novel and cheap catalysts were designed and successfully synthesized by a simple method. In those novel catalysts, three-dimensionally ordered macroporous (3DOM) SiO2 is used as support and two types of nanoparticles (Mn-rich nanoparticles and Ce-rich nanoparticles) with diameter of 20-25 nm and 1.5-5 nm are well dispersed and supported on the skeleton of 3DOM SiO2. 3DOM K0.5MnCeOx/SiO2 catalysts show super catalytic performance for diesel soot oxidation, which is related to the macroporous effect of 3DOM structure, nano-effect of active component and synergetic effect among K, Mn and Ce. Among the catalysts, 3DOM K0.5MnCeOx/SiO2-40 shows the highest catalytic activity, i.e. T50 and T90 are 315 oC and 348 oC, respectively. This catalytic activity is one of the best results so far reported under the condition of loose contact between soot and catalyst. Due to facile synthesis, low cost, high catalytic activity and stability for diesel soot combustion, the as-prepared catalysts are promising for practical applications in dealing with exhaust of diesel engine.

Back to tab navigation

Supplementary files

Publication details

The article was received on 22 Dec 2018, accepted on 12 Feb 2019 and first published on 12 Feb 2019


Article type: Paper
DOI: 10.1039/C8CY02580K
Citation: Catal. Sci. Technol., 2019, Accepted Manuscript

  •   Request permissions

    Three-dimensionally ordered macroporous K0.5MnCeOx/SiO2 catalysts: Facile preparation and fine catalytic performances for soot combustion

    X. Yu, Z. Zhao, Y. Wei, L. Zhao and J. Liu, Catal. Sci. Technol., 2019, Accepted Manuscript , DOI: 10.1039/C8CY02580K

Search articles by author

Spotlight

Advertisements