毕业设计-净化室内甲醛催化剂的制备及其性能研究.docVIP

论文题目：专 业：环境工程 摘要 TiO2由于具有抗化学和光腐蚀、价廉、无粒径小、比表面积大、光催化效率高等优点，在治理环境污染中逐渐受到人们的高度重视。0.1mg/m3的室内。然后以钛酸丁酯为前驱体，冰醋酸为水解抑制剂，乙醇为溶剂，采用溶胶-凝胶法制备500℃。并研究了负载不同量的人造沸石，硅胶，制作催化剂，研究对甲醛的降解能力。同时采用SEM电镜扫描表征了后TiO2的性质。TiO2净化效果明显高于TiO2催化剂。人造沸石的最佳负载量为1:50，硅胶的最佳负载量为1：402倍。最后研究了光氧化甲醛气体降解过程的反应动力学甲醛的光催化反应与反应初始浓度有关 关键词：光催化，TiO2，， 人工沸石，论文类型： Subject：Study on preparation and performance of purify indoor formaldehyde catalyst Specialty：Environmental Engineering ABSTRACT In recent years, The problem of indoor air pollution has already caused the peoples extensive concern, formaldehyde is a main factor of indoor air quality assessment , so how to through the purification technology at home and abroad over formaldehyde become the hot spot of the indoor pollution problem. Light catalytic oxidation technology is developed a depth and new oxidation pollution control technology in recent decades ,It degradation is thorough and no secondary pollution . With its ability of the corrosion resistance of chemical and light, inexpensive, non-toxic, small size, large surface area and photocatalytic efficiency, Light TiO2 chemical resistance is paid more and more attention in environmental pollution control. This study design of dynamic and static gas path, simulation for formaldehyde concentration is 0.1 mg/m3 of indoor. Then titanate with butyl acetate precursor for body, glacial acetic acid hydrolysis for inhibitors, no water ethanol as solvent, using sol-gel method nanometer tio2, calcining temperature of 500 ℃. And the load varying amounts of artificial zeolite, silicone, making catalyst, study the ability to formaldehyde degradation. In the same time, by using SEM using scanning electron microscopy (SEM) represent the load of TiO2 after nature. Research found that load the artificial zeolite, silica gel TiO2 purifying effect of TiO2 was significantly higher than the catalyst. Artificial zeolite capacity up to the best 1:50, silica gel capacity up to one of the best. Man-made degradation effect is bett