Cu负载型Ti基复合氧化物选择性催化还原NO及机理研究中期报告

精品文档---下载后可任意编辑Cu 负载型 Ti 基复合氧化物选择性催化还原 NO 及机理讨论中期报告中文摘要：氮氧化物（NOx）是常见的工业废气污染物，对人体健康和大气环境都有不良影响。选择性催化还原（SCR）技术是一种有效的降低 NOx排放的方法。本讨论利用 Cu 负载型 Ti 基复合氧化物作为 SCR 催化剂。通过 XRD、TEM、H2-TPR 等手段对催化剂进行表征。在催化剂活性测试中，讨论了不同反应条件（温度、空速、氨气浓度等）对 SCR 反应的影响。结果表明，催化剂在 350 ℃下具有最佳的催化活性。此外，氨气浓度越高，SCR 反应速率越快。最后利用 DFT 方法对 SCR 反应机理进行探究，并建立反应机理模型。英文摘要：Nitrogen oxides (NOx) are common industrial waste gas pollutants, which have adverse effects on human health and the atmospheric environment. Selective catalytic reduction (SCR) technology is an effective method to reduce NOx emissions. In this study, Cu-loaded Ti-based composite oxides were used as SCR catalysts. The catalysts were characterized by XRD, TEM, H2-TPR and other means. The effect of different reaction conditions (temperature, space velocity, ammonia concentration, etc.) on the SCR reaction was studied in the catalyst activity test. The results showed that the catalyst had the best catalytic activity at 350 ℃. In addition, the higher the ammonia concentration, the faster the SCR reaction rate. Finally, the DFT method was used to explore the SCR reaction mechanism and establish a reaction mechanism model.