Catalytic destruction of volatile organic compound emissions by platinum based catalyst
| Autor: | Saad F. Tahir, Carolyn A. Koh |
|---|---|
| Rok vydání: | 1999 |
| Předmět: |
chemistry.chemical_classification
Environmental Engineering Hydrogen Waste management Atmospheric pressure Chemistry Health Toxicology and Mutagenesis Public Health Environmental and Occupational Health chemistry.chemical_element General Medicine General Chemistry engineering.material Pollution Toluene Catalysis Metal chemistry.chemical_compound Coating visual_art engineering visual_art.visual_art_medium Environmental Chemistry Volatile organic compound Platinum Nuclear chemistry |
| Zdroj: | Chemosphere. 38:2109-2116 |
| ISSN: | 0045-6535 |
| DOI: | 10.1016/s0045-6535(98)00420-2 |
| Popis: | Pt/γ-Al2O3 (spheres) catalysts were prepared by depositing a resilient coating of Pt metal on the external surface of the support. Using a bench-scale rig, the developed Pt/Al2O3 catalysts were investigated for their destruction efficiencies with a variety of VOCs in air-streams (VOC concentrations between 600–700 ppm) at space velocities ranging from 13,000 to 20,000 h−1 (flow rates between 865–1335 ml/min) at atmospheric pressure. Catalytic activity was enhanced with an increase of Pt loading on Al2O3 support up to 0.3 % Pt. The 0.3 % Pt/Al2O3 showed above 99 % conversion efficiency and stability with non-halogenated VOCs at inlet reaction temperatures ranging between 196–355 °C, but it was deactivated by destruction of chlorinated VOCs. Ageing the 0.3 % Pt used catalyst at 550 °C for a longer period did not affect its activity. Pretreatment of the 0.3 % Pt developed catalyst with hydrogen also did not improve activity in the destruction of toluene in air, compared to the fresh prepared catalyst. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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