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Characterization of porous LaCoO3 prepared from wood powder template and its catalysis for diesel particulate matter
Ist Teil von
Journal of porous materials, 2023-06, Vol.30 (3), p.911-920
Ort / Verlag
New York: Springer US
Erscheinungsjahr
2023
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
In this paper, LaCoO
3
porous perovskite was synthesized using wood powder template combined with sol–gel process, while LaCoO
3
prepared by traditional sol–gel method was used as a comparison. The catalysts prepared by different methods were characterized by X-ray diffraction (XRD), fourier-transform infrared spectroscopy (FT-IR), scanning electron microscope (SEM), N
2
adsorption–desorption, and the particulate matter (PM) trapping and catalytic oxidation tests were carried out by engine bench test and thermogravimetric analyzer (TGA). The results showed that the porous LaCoO
3
successfully replicated the structural features of wood powder from macroscopic to tracheid, forming a porous structure. Porous LaCoO
3
exhibits better catalytic activity than powdered LaCoO
3
with similar specific surface area, this can be attributed to the porous structure of LaCoO
3
, which increases the contact area and the number of contact points between PM and catalyst.