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Experimental Evidence of Gas-Liquid Boundary Controlled Reactions in UV-Ozone Systems

 

作者: M. Denis,   G. Minon,   W.J. Masschelein,  

 

期刊: Ozone: Science & Engineering  （Taylor Available online 1992）
卷期: Volume 14, issue 3  

页码: 215-230

 

ISSN:0191-9512

 

年代: 1992

 

DOI:10.1080/01919519208552476

 

出版商: Taylor & Francis Group

 

关键词: Ozone;UV-Ozone Systems;Oxalic Acid Model Compound;Gas-Phase Ozone Photolysis;Gas-Liquid Ozone Photolysis;Hydrogen Peroxide Formation;Hydrogen Peroxide Photolysis;Mass Transfer of Ozone;Ozone Autodecomposition;Flash UV Irradiation

 

数据来源: Taylor

 

摘要:

Oxalic acid is chosen as a model compound to study the UV + O3reactions in an heterogeneous continuous gas sparging reactor. Oxalic acid has the advantage of not reacting significantly with ozone alone, and when oxidized with O3+ UV radiation, the reaction is of the single-step type : HOOC-COOH + O3(UV) = 2 CO2+ H2O + O2. The reactions are of zero order as long as no additional alkalinity is introduced into the system. Evidence is that the photolysis of ozone is produced in the gas phase and that the reaction occurs in the gas-liquid boundary layer.

 

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