摘要
采用离子交换法制备了Mn-ZSM-5系列催化剂,并利用浸渍法制备了TiO2/Mn-ZSM-5系列复合催化剂.通过Uv-Vis、BET、X射线衍射等手段对催化剂进行了表征,考察了臭氧存在下乙醛的降解性能.结果表明:臭氧能显著促进乙醛的光催化降解,在所制备的催化剂中TiO2/Mn-ZSM-5(1:2)对乙醛降解具有最好的活性,这归功于这种复合催化剂对臭氧和乙醛的吸附和催化协同效应.
Mn-ZSM-5 series catalysts were synthesized by ion exchange method and were loaded with TiO2 by impregnation. These catalysts were characterized by UV-VIS, X-ray diffraction （XRD）, BET, and their ozone-assisted photocatalytie performance was investigated. The results showed that ozone contributed to the photocatalytic degradation of acetaldehyde. Among these catalysts prepared, TiO2/Mn-ZSM-5 exhibited higher catalytic activity on the degradation of acetaldehyde, the improvement was attributed to the synergetic effect among adsorption/concentration and ozonation/catalytic reaction.
出处
《分子催化》
EI
CAS
CSCD
北大核心
2010年第1期64-70,共7页
Journal of Molecular Catalysis(China)
基金
国家863项目(2007AA061405)
关键词
光催化
臭氧
耦合作用
乙醛
Photodegradation
Ozone
Synergistic effect
Acetaldehyde
