%0 Journal Article
%T Selective catalytic reduction of NOx over Pd/CeZr/TiO2/Al2O3 wire-mesh honeycomb catalysts<br>Pd/CeZr/TiO2/Al2O3蜂窝状金属丝网催化剂选择催化还原NOX
%A Sun Hong
%A Quan Xie
%A Zhang Yao-bin
%A Zhao Ya-zhi
%A <br>Sun H
%A Quan X
%A Zhang YB
%A Zhao YZ
%J 环境科学
%D 2008
%I 
%X Pd/CeZr/TiO2/Al2O3 wire-mesh honeycomb catalyst was prepared by sol-gel and impregnation. Furthermore, selective catalytic reduction of NOX over Pd/CeZr/TiO2/Al2O3 wire-mesh honeycomb catalyst with propylene under lean burn condition was studied. The effects of the concentration of tetra-N-butyl titanate and dipcoat cycles on TiO2 washcoat were studied by SEM, and the effects of Pd concentration, O2 concentration and gas velocity on catalytic activity were investigated. The experimental results showed that the TiO2 washcoat on wire-mesh support is even and crack-free when the support is impregnated in 20.0% tetra-N-butyl titanate sol for 2 cycles. The NOX conversion decreases with Pd concentration increase. When Pd concentration is 0.23%, NOX conversion is highest. NOX conversion increases with oxygen concentration increase in the range of 1.5%-6.0%. However, when oxygen concentration is higher than 6.0%, NOX conversion decreases with increasing oxygen concentration. The NOX conversion decreases with gas velocity increase and its effect is severer at high temperature than low temperature.
%K wire-mesh honeycomb
%K selective catalytic reduction
%K NOX
%K propylene<br>蜂窝状金属丝网催化剂
%K 选择催化还原
%K NOx
%K 丙烯
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=4854FFE775E50601B4604BEF5F858EF5&yid=67289AFF6305E306&vid=771469D9D58C34FF&iid=B31275AF3241DB2D&sid=4477555D45FDE796&eid=3C4D8AE76F4902FF&journal_id=0250-3301&journal_name=环境科学&referenced_num=0&reference_num=26