화학공학소재연구정보센터
Catalysis Today, Vol.117, No.1-3, 376-381, 2006
Complete oxidation of methane and CO at low temperature over LaCoO3 prepared by spray-freezing/freeze-drying method
Perovskite-type LaCoO3 oxides were prepared by spray-freezing/freeze-drying method using citrate precursor. The calcination temperature for a single phase of LaCoO3 could be lowered to 500 degrees C without formation of any other oxides and the product had the highest surface area of 23.7 m(2)/ g. Below 500 degrees C, this catalyst with the perovskite structure and the high surface area showed higher activity for complete oxidation of low concentration methane (2000 ppm) and CO (1%) compared to Pt/Al2O3 catalyst. (C) 2006 Elsevier B.V. All rights reserved.