Based on the catalytic effect of CO oxidation outside the furnace of deep staged combustion

the experimental study on Ce-Cu/γ-Al_2O_3 non-precious metal catalyst prepared by conventional impregnation method was carried out in a tubular furnace.The results show that

the catalytic oxidation of CO was obvious at 250～300℃(the conversion rate of CO reached 78.62%at 255℃)

and the conversion rate of CO was maintained at a high level (99.5%) at temperatures higher than 300℃.When the residence time was 1.2 s

the CO oxidation activity was higher at 150～200℃.When the residence time was 5 s

the conversion rate of CO was 55.7%(150℃) and quickly increased to 97%(200℃)

with obvious catalytic effect.The catalyst also had high activity and treatment capacity for CO with high volume fraction (3 000×10~(–6)).The catalytic efficiency increased with the decrease of gas velocity (0.2～0.8 L/min) and the increase of oxygen content (2%～3%).The diffraction peak of Al_2O_3 decreased slightly after the addition of Co

which is beneficial to the improvement of catalytic oxidation activity.