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真空紫外光降解苯的研究

Keywords: 真空紫外光苯光解降解率

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Abstract:

为了考察真空紫外光辐射在气体净化中的应用,以苯作为目标污染物,分别进行了紫外光波长、气体湿度、反应时间、初始浓度以及辐射功率对苯光解率的影响实验。实验结果表明,真空紫外光辐射方法净化气相污染物中的苯效果良好,在一定条件下,浓度为348.2mg/m3苯污染气体真空紫外光降解率可达到90%。通过在不同条件下苯的降解率以及臭氧浓度变化,初步探讨了苯降解的机理以及降解途径。苯的降解主要是通过氢氧自由基(·OH)的加成以及后续一系列的氧化反应,降解产物为苯酚以及含有羟基的长链烃。

References

[1]  邓南圣,吴峰,环境光化学,北京:化学工业出版社,2003.
[2]  Alapi T,Van K.Cracynest,Direct VUV photolysis of chlorinated methanes and their mixtures in a nitrogen stream,Journal of Chemosphere,2007.
[3]  Oppenlander T,Application of excimer lamps in photo-chemistry and photochemical technology,Trends in Chemical Engineering,2003.
[4]  Alapi T,Dombi A,Comparative study of the UV and UV/ VUV-induced photolysis of phenol in aqueous solution,Journal of Photochemistry and Photobiology A:Chemistry,2007.
[5]  Oppenlander T,Gliese S,Mineralization of organic micropol-lutants (homologous alcohols and phenols) in water by vacu-um-UV-oxidation (H2O-VUV) with an incoherent xenon-exci-mer lamp at 172 nm,Journal of Chemosphere,2000.
[6]  Oppenlander T,Michael Fradl,TOC destruction of a phe-nol/water azeotrope by "photorcactive distillation" through an invoherent vaeuum-UV excimer lamp,Chemical Engineering and Technology,1999(22).
[7]  冯祥芬.侯惠奇.朱绍龙 172nm真空紫外辐射降解水相有机染料的机理研究 [J].-环境科学学报2005(6)
[8]  Bergonzo P,Boyd I.W,Low pressure photodeposition of silicon nitride films using a xenon excimer lamp,Applied Physics Letters,1993(13).
[9]  Hashem T.M,Zirlewagen M,Braun A.M,Simultane-ous photochemical generation of ozone in the gas phase and photolysis of aqueous reaction systems using one VUV light source,Water Science and Technology,1997(4).
[10]  Alapi T,Dombi A,Direct VUV photolysis of chlorinated methanes and their mixtures in an oxygen stream using an ozone producing low-pressure mercury vapour lamp,Journal of Chemosphere,2007.
[11]  Monies G.Gonzalez,Esther Oliveros,Vaeuum-uhraviolet photolysis of aqueous reaction systems,Photochemistry and Photobiology,2004.

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