Catalytic removal of PM by Li-Co delafossite catalysts

Abstract

By using solution combustion synthesis method, several Li-Co delafossite catalysts were prepared via a highly exothermic and self-sustaining reaction. The prepared catalysts were characterized by XRD, SEM and the catalytic activities of the catalysts were evaluated by small sample experiment. It is shown that under loose contact conditions this catalyst can catalyze soot combustion at 360 °C, and the best prepared catalyst LiCo_0.9O₂ can ignite soot combustion below 300 °C. In the incompletely synthesized catalysts the Co cations shift to higher electrovalence, so the number of the surface adsorbed oxygen (O⁻) of the prepared delafossite catalysts increase and LiCo_0.9O₂ has the optimum catalytic activity.

Keywords

solution combustion synthesis / delafossite / catalysts / particulate matter

References

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