Abstract To develop an air purifier for a smoking room, an ozone (O3) decomposition manganese catalyst, capable of the oxidative decomposition of the volatile organic compounds (VOCs) in tobacco smoke, was applied in this study. The actual concentration of the total VOCs (TVOCs) that was measured in a smoking room was ~2,000 μg m−3, toluene, benzene, and acetaldehyde were also obtained in high concentrations. An O3 oxidative decomposition catalyst, MnOx/TiO2, synthesized by chemical vapor condensation (CVC) (MnOx/CVC-TiO2) was subjected to decomposition experiments, at room temperature (25 °C), utilizing acetaldehyde as the target material. The catalyst-coated filter was installed as a fixed bed, and after supplying O3, at a concentration of 25 ppm, it was confirmed that the catalyst had facilitated the complete decomposition of 10 ppm of acetaldehyde. Next, a decomposition experiment was conducted for TVOCs with a prototype smoke purifier, which employed the catalyst-coated filter, in a 1-m3 bench-scale chamber. The initial concentration of TVOC, 4,300 μg m−3, was reduced to 171 μg m−3 after 30 min (treatment efficiency, 96%). Finally, the treatment performance of the practical smoke purifier was tested in a real smoking room (61.9 m3). The initial TVOC concentration was reduced from 2,229 to 493 μg m−3 after 30 min with a removal efficiency of 80%. Moreover, ~70% of the acetaldehyde concentration was also decomposed.

中文翻译：

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使用 MnOx/TiO2 催化剂涂层过滤器分解醛、VOC 和臭氧的空气净化器的性能：在实际吸烟室中的实验研究

摘要 为了开发一种吸烟室空气净化器，本研究采用臭氧（O3）分解锰催化剂，能够氧化分解烟草烟雾中的挥发性有机化合物（VOCs）。在吸烟室测得的总 VOC (TVOC) 的实际浓度约为 2,000 μg m-3，还获得了高浓度的甲苯、苯和乙醛。通过化学气相冷凝 (CVC) (MnOx/CVC-TiO2) 合成的 O3 氧化分解催化剂 MnOx/TiO2 在室温 (25°C) 下进行分解实验，使用乙醛作为目标材料。催化剂涂层过滤器作为固定床安装，在供给浓度为 25 ppm 的 O3 后，证实该催化剂促进了 10 ppm 乙醛的完全分解。接下来，使用带有催化剂涂层过滤器的原型烟雾净化器在 1 立方米的实验室规模室中对 TVOC 进行了分解实验。TVOC 的初始浓度为 4,300 μg m-3，30 分钟后降至 171 μg m-3（处理效率为 96%）。最后，在真实的吸烟室（61.9 m3）中测试了实用型烟雾净化器的处理性能。30 分钟后，初始 TVOC 浓度从 2,229 降至 493 μg m-3，去除效率为 80%。此外，约 70% 的乙醛浓度也被分解。TVOC 的初始浓度为 4,300 μg m-3，30 分钟后降至 171 μg m-3（处理效率，96%）。最后，在真实的吸烟室（61.9 m3）中测试了实用型烟雾净化器的处理性能。30 分钟后，初始 TVOC 浓度从 2,229 降至 493 μg m-3，去除效率为 80%。此外，约 70% 的乙醛浓度也被分解。TVOC 的初始浓度为 4,300 μg m-3，30 分钟后降至 171 μg m-3（处理效率，96%）。最后，在真实的吸烟室（61.9 m3）中测试了实用型烟雾净化器的处理性能。30 分钟后，初始 TVOC 浓度从 2,229 降至 493 μg m-3，去除效率为 80%。此外，约 70% 的乙醛浓度也被分解。