title: [Photonic Efficiency of Ethyl Acetate Photolysis in Gas Phase: Dependence on Wavelength and Catalyst].
abstract: Four kinds of excilamps with different wavelengths (XeCl*, KrCl*, XeBr* and KrBr*) were used for removing ethyl acetate in gas phase. The removal efficiencies of ethyl acetate by three loaded catalysts (TiO2 loaded on organic film, graphene loaded on organic film, and TiO2 loaded on mesh) were compared, and the effects of lamp sources, irradiation power and initial concentration on the removal efficiency were also investigated. Moreover, irradiation spectra and power of light sources were determined, and photonic efficiencies under different reaction conditions were calculated. The experimental results showed that the removal efficiency of ethyl acetate decreased in the order of KrBr* > KrCl* > XeCl* > XeBr*, while the photonic efficiency seemed to be relatively high with both XeCl* and KrBr* excilamps. In the presence of the catalyst of TiO2 loaded on organic film, both the removal efficiency and the photonic efficiency were higher than those without catalyst, but the increment was not significant. The photonic efficiency increased with increasing initial concentration and gas flow rate. With KrBr* excilamp, a photonic efficiency of 5.63% was obtained when the experimental conditions were set as: irradiation power of 0.76 W, initial concentration of 946 mg x m(-3), and gas flow rate of 600 mL x min(-1).
authors.forename: Xue-hui
authors.initials: XH
authors.lastname: Fang
authors.forename: Jie
authors.initials: J
authors.lastname: Zhao
authors.forename: Li
authors.initials: L
authors.lastname: Shu
authors.forename: Yong
authors.initials: Y
authors.lastname: Gao
authors.forename: Zhao-lian
authors.initials: ZL
authors.lastname: Ye
mesh_terms: D000085:Acetates / Q000737:chemistry*; D002384:Catalysis; D008027:Light; D010782:Photolysis; D017785:Photons; D014466:Ultraviolet Rays
chemical_list: D000085:Acetates; C007650:ethyl acetate