Ce-P-O催化剂用于氨选择催化还原消除氮氧化物  

Ce-P-O catalyst for selective catalytic reduction of NO with NH_3

作　　者：李飞[1] 杨向光[2] 王永棣[1] 侯鑫[1] 庞菊玲[1] 邓拓[1] 

机构地区：[1]西北化工研究院,陕西西安710600 [2]中国科学院长春应用化学研究所,吉林长春130022

出　　处：《工业催化》2012年第2期10-15,共6页Industrial Catalysis

基　　金：科研院所技术开发研究专项资金

摘　　要：制备了可用于氨选择催化还原消除氮氧化物的Ce-P-O催化剂,通过X射线衍射、扫描电镜、N2吸附、H2程序升温还原和氨程序升温脱附等手段对催化剂进行了表征,并考察了催化剂的性能。结果表明,催化剂在空速20 000 h-1表现出较高的氮氧化物消除活性,NO转化率>90%,在水蒸汽和SO2存在条件下,催化剂具有较好的催化活性和稳定性。Ce-P-O catalyst for the selective catalytic reduction of NO with NH3 was prepared and charac- terized by XRD, SEM, N2-adsorption, HE-TPR and NH3-TPD. The catalyst properties were investigated. The results showed that Ce-P-O catalyst calcined at 500 ~C exhibited higher activities for the removal of NOx, NO conversion 〉 90% under the reaction condition of space velocity 20 000 h - 1 and NO conversion were not significantly affected in the presence of H20 and SO2.

关 键 词：催化化学 氮氧化物 选择催化还原 氨 铈 磷酸盐 

分 类 号：TQ426.94[化学工程] O643.36[理学—物理化学]