Abstract Fabrication of V2O5-WO3/TiO2 supported-SiC catalytic filters has been developed by using rotational coating method and discussed their NO conversion performances at different reaction temperature (150–380 °C). M3C catalytic filter (coated with the grinded catalyst solution of catalyst with particle size of 1.0 μm) showed the 99.9% NO conversion with the Nx-slip concentration below 15 ppm with the optimal temperature range from 230–350 °C, which is very satisfactory with the value approaching to the case of powder catalyst. The concentration of the catalyst coating solution optimized to 10 wt% (M310) to achieve the better NO conversion > 99.5%. An effect of ball milling on the catalytic coating solution has investigated to achieve the 99.9% NO conversion. The effect of varied V2O5 content on NO conversion has been studied. The activation temperature for > 99% conversion of 700 ppm NO gas shifted towards the lower one with the increase of the V2O5 content of V2O5-WO3/TiO2 supported SiC filter. M3V3 (3 wt% V2O5) is the best catalyst composition showed 100% NO conversion with the reaction temperature window 280–320 °C with less N2O formation below 20 ppm. However, M3V6 (6 wt% V2O5) showed the lowest reaction temperature as 240 °C for > 99% NO conversion.

中文翻译：

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V 2 O 5 -WO 3 /TiO 2 负载型SiC高性能催化过滤器的NO X 还原的研制

摘要 利用旋转涂层法制备了 V2O5-WO3/TiO2 负载的 SiC 催化过滤器，并讨论了它们在不同反应温度（150-380°C）下的 NO 转化性能。M3C催化过滤器（涂有粒径为1.0μm的催化剂磨碎的催化剂溶液）显示出99.9%的NO转化率，Nx-slip浓度低于15 ppm，最佳温度范围为230-350°C，非常令人满意值接近粉状催化剂的情况。催化剂涂层溶液的浓度优化为 10 wt% (M310) 以实现更好的 NO 转化率 > 99.5%。研究了球磨对催化涂层溶液的影响，以实现 99.9% 的 NO 转化率。已经研究了不同的 V2O5 含量对 NO 转化率的影响。随着 V2O5-WO3/TiO2 支持的 SiC 过滤器的 V2O5 含量的增加，700 ppm NO 气体的 > 99% 转化率的活化温度向较低的温度移动。M3V3 (3 wt% V2O5) 是最好的催化剂组合物，NO 转化率为 100%，反应温度范围为 280-320 °C，低于 20 ppm 时 N2O 形成较少。然而，M3V6 (6 wt% V2O5) 的最低反应温度为 240 °C，NO 转化率 > 99%。