史文晶,黄欣,施建伟,上官文峰.TiO2/Mn-ZSM-5复合催化剂的光催化-臭氧耦合降解乙醛[J].分子催化,2010,(1):0 |
TiO2/Mn-ZSM-5复合催化剂的光催化-臭氧耦合降解乙醛 |
Photodegradation of Acetaldehyde on TiO2/Mn-ZSM-5 composite catalyst assisted by Ozone |
投稿时间:2009-12-25 修订日期:2010-01-18 |
DOI: |
中文关键词: 光催化 臭氧 耦合作用 乙醛 |
英文关键词:Photodegradation Ozone Synergistic effect Acetaldehyde |
基金项目:国家863项目(2007AA061405) |
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中文摘要: |
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。 |
英文摘要: |
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 photocatalytic 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. |
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