中文摘要：

为了扩宽选择性催化还原（SCR）催化剂去除NOx高活性温度窗口,运用燃烧合成法制备了一系列Ti-Ce-W复合金属氧化物催化剂.此外,研究了不同空速对该催化剂性能的影响,并尝试直接用燃烧法将催化剂涂覆于堇青石陶瓷载体表面,涂覆量达到25%.实验结果表明：n（W）∶n（Ti）=0.2（n为物质的量）时其SCR性能最好;TiCe0.2W0.2Ox的NO去除率在200-440℃内达到100%;N2选择性在400℃以内均能达到100%;在空速11 400h-1,温度250-450℃时,NO去除率维持在95%以上,N2选择性为100%.

英文摘要：

In order to broaden the temperature window of nitrogen oxide removal efficiency of selective catalytic reduction （SCR） catalyst, the research of Ti-Ce-W mixed oxide catalysts was conducted. Among a series of Ti-Ce-W mixed oxide catalysts prepared by SHS （self-propagating high-temperature synthesis） method, catalyst with n（W）： n（Ti）=0.2（n is the amount of substance） showed a 100% NO removal efficiency from 200 to 440 ℃ and 100% N2 selectivity below 400 ℃. The SCR characteristic of TiCe0.2W0.2Ox was also tested under high GHSV（ gas hourly space velocity） of 11 400 h^-1. Besides by directly deposit the catalyst on cordierite carrier, a 95%NO removal efficiency and a 100% N2 selectivity from 250 to 450 ℃ were obtained.