%0 Journal Article
%T Selective Catalytic Reduction of NO on Ag, Co and Cu/Al2O3 in Excess Oxygen<br>富氧条件下Ag、Co和Cu/Al2O3选择性催化还原NO的研究
%A CUI Xiang yu
%A HAO Ji ming
%A FU Li xin
%A LI Jun hu
%A ZHU Tian le
%A LIU Zhi ming
%A <br>崔翔宇
%A 郝吉明
%A 傅立新
%A 李俊华
%A 朱天乐
%A 刘志明
%J 环境科学
%D 2004
%I 
%X The catalytic activities of alumina-supported Ag, Co and Cu for selective reduction of NO with propene as reductant in the presence of excess oxygen were investigated. The catalytic performances of single-component catalysts with different metal loadings and of samples prepared by various methods such as mechanical mixing, one-step impregnation, two-step impregnation, etc. were studied. The experimental results showed that the Ag exhibited the highest conversion of NO to N2 (approximately 89% with 2% loading, wt.) among single-component catalysts, the lower was Co, and the lowest was Cu. The sequence of the temperature for the maximum conversion was on the order of Cu < Co < Ag. For Ag catalysts, the activities between samples of identical loadings prepared by one-step and two-step impregnation were almost the same. The activities of mixed samples were not the simple sum of the single-component catalysts. The mixed Ag-Co sample possessed the highest activity (80% above). The activities of the combinatorial samples declined comparatively to some extent. The activities of one-step impregnation samples descended more markedly and the highest conversion was only over 30%.
%K selective catalytic reduction
%K nitrogen monoxide
%K silver
%K cobalt
%K copper
%K combination
%K excess oxygen<br>选择性催化还原
%K 一氧化氮
%K 银
%K 钴
%K 铜
%K 组合
%K 富氧条件
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=8EF11EFEACEDA411&yid=D0E58B75BFD8E51C&vid=C5154311167311FE&iid=E158A972A605785F&sid=13553B2D12F347E8&eid=BC12EA701C895178&journal_id=0250-3301&journal_name=环境科学&referenced_num=14&reference_num=13