标题：Influence of calcination temperature on Fe0.8Mg0.2Ozcatalyst for selective catalytic reduction of NOxwith NH3
作者：Xu, Liting ;Niu, Shengli ;Lu, Chunmei ;Zhang, Qi ;Li, Jing
作者机构：[Xu, Liting ;Niu, Shengli ;Lu, Chunmei ;Zhang, Qi ] School of Energy and Power Engineering, Shandong University, Jinan; 250061, China;[Li, Jing ] Scho 更多
摘要：A series of Fe0.8Mg0.2Ozcatalysts for selective catalytic reduction (SCR) of NOx with NH3were prepared via co-precipitation method with microwave thermal assistant at different calcination temperature. The influence of calcination temperature on the catalytic performance, microstructure properties, surface elements and acidity over Fe0.8Mg0.2Oz-T catalysts was investigated by various characterization methods. Fe0.8Mg0.2Ozcatalyst calcined at 400 °C showed the highest NOxconversion and excellent N2selectivity. More than 90% NOxconversion could be achieved in a wide temperature range of 250–350 °C. Fe0.8Mg0.2Oz-400 with large surface area and pore volume obtained a high purity γ-Fe2O3crystalline phase with the calcination temperature of 400 °C. Meanwhile, Magnesium had strong interaction with γ-Fe2O3and existed in either highly dispersed or amorphous phase. Surface oxygen concentration and acidity (mainly Brönsted acid sites in Fe0.8Mg0.2Oz-T catalysts) played an important role in SCR reaction. The results implied that the higher surface area, pore volume, strong interaction, superior surface acidity and redox ability contributed to the excellent SCR catalytic performance of Fe0.8Mg0.2Ozcatalyst calcined at 400 °C.
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