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.
出处
《工业催化》
CAS
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
关键词
催化化学
氮氧化物
选择催化还原
氨
铈
磷酸盐
catalytic chemistry
nitrogen oxides
selective catalytic reduction
ammonia
cerium
phosphate
