TiO2-Based Materials for Toluene Photocalytic Oxidation: Water Vapor Influence
-
Christophe Stavrakakis
und
Pierre Le Cloirec
Abstract
Two photoactive TiO2-supported materials are considered for toluene degradation in the gas phase. A kinetic study is performed over these two catalysts. The mechanisms involved are well represented by the Langmuir-Hinshelwood (L-H) relation at initial time. The kinetic rates and adsorption constants are then calculated to compare the catalysts. Particular attention focuses on the role of the humidity on the photocatalytic activity. Conversion rates of the toluene into carbon dioxide are measured and reveal a singular difference between the catalysts. Benzaldehyde and benzoïc acid are identified as major by-products in the gas phase. The production of stable intermediates is also shown. It is concluded that not only the presence of water vapor but also the characteristics of the titanium materials have to be taken into account to explain the kinetic behavior of photocatalytic oxidation.
© 2016 by Walter de Gruyter Berlin/Boston
Artikel in diesem Heft
- Preface (TiO2-11 Section)
- Preface (AOTs-12 Section)
- Photocatalytic Decomposition of Formaldehyde Using Titania Coated Lime Tile
- TiO2-Nitrogen Modified for Water Decolourisation under VIS Radiation
- FTIR Studies of the Surface of TiO2, Fe-TiO2 and Fe-C-TiO2 Photocatalysts in Phenol Oxidation Via the Photo-Fenton Process
- Using Titania Photocatalysts to Degrade Toluene in a Combined Adsorption and Photocatalysis Process
- Photoelectrochemical Decomposition of VOCs on an Anodized TiO2 Plate
- Enhancement and Modeling of the Photocatalytic Degradation of Benzoic Acid
- Reactivity Indices for ortho/para Monosubstituted Phenols
- Modeling of the Photocatalytic Degradation Reactions of Aromatic Pollutants: A Solvent Effect Model
- Photodegradation of Malachite Green Using Immobilized TiO2 and Factorial Design
- Adsorption and Photodegradation of Humic Acids by Nano-Structured TiO2 for Water Treatment
- Photocatalytic Reductive Destruction of Azo Dyes by Polyoxometalates
- Effect of the Sintering Temperature on the Photocatalytic Activity of CdO + CdTiO3 Thin Films
- Photocatalytic Activity in Zn2TiO4 + ZnO Thin Films Obtained by the Sol-gel Process
- TiO2-Based Materials for Toluene Photocalytic Oxidation: Water Vapor Influence
- Influence of Aqueous Solubility of Various VOCs on Their Photocatalytic Degradation
- Photocatalysis: A Powerful Technology for Cold Storage Applications
- Some Remarks on So-Called Heterogeneous Photocatalysis and on the Mechanical Application of the Langmuir-Hinshelwood Kinetic Model
Artikel in diesem Heft
- Preface (TiO2-11 Section)
- Preface (AOTs-12 Section)
- Photocatalytic Decomposition of Formaldehyde Using Titania Coated Lime Tile
- TiO2-Nitrogen Modified for Water Decolourisation under VIS Radiation
- FTIR Studies of the Surface of TiO2, Fe-TiO2 and Fe-C-TiO2 Photocatalysts in Phenol Oxidation Via the Photo-Fenton Process
- Using Titania Photocatalysts to Degrade Toluene in a Combined Adsorption and Photocatalysis Process
- Photoelectrochemical Decomposition of VOCs on an Anodized TiO2 Plate
- Enhancement and Modeling of the Photocatalytic Degradation of Benzoic Acid
- Reactivity Indices for ortho/para Monosubstituted Phenols
- Modeling of the Photocatalytic Degradation Reactions of Aromatic Pollutants: A Solvent Effect Model
- Photodegradation of Malachite Green Using Immobilized TiO2 and Factorial Design
- Adsorption and Photodegradation of Humic Acids by Nano-Structured TiO2 for Water Treatment
- Photocatalytic Reductive Destruction of Azo Dyes by Polyoxometalates
- Effect of the Sintering Temperature on the Photocatalytic Activity of CdO + CdTiO3 Thin Films
- Photocatalytic Activity in Zn2TiO4 + ZnO Thin Films Obtained by the Sol-gel Process
- TiO2-Based Materials for Toluene Photocalytic Oxidation: Water Vapor Influence
- Influence of Aqueous Solubility of Various VOCs on Their Photocatalytic Degradation
- Photocatalysis: A Powerful Technology for Cold Storage Applications
- Some Remarks on So-Called Heterogeneous Photocatalysis and on the Mechanical Application of the Langmuir-Hinshelwood Kinetic Model
