ENVR 139 |
| Chloro-containing organic compounds are very important and widely used as starting materials, intermediates and solvents in the chemical industry, agricultural chemistry and medical chemistry. However, chloro-containing organic compounds are harmful to the environment and animals. Dechlorination has attracted increasing attention. One of the most promising methods is the hydrodehalogenation reaction systems with transition metal catalysts and hydrogen sources. In this work, we investigated the catalytic performance of polymer-stabilized Pt and Pd nanocatalysts in hydrogenation of chloroaromatic compounds. Hydrodechlorination of monochlorobenzene was carried out over polymer-stabilized Pt and Pd nanocatalysts in methanol at 298 K under 0.1 MPa of hydrogen. The product consisted of cyclohexane only over Pt nanocatalysts. With Pd nanocatalysts, benzene was found with little cyclohexane. The activity was sensitive to the properties of Pt and Pd nanoclusters, especially the particle size and size distribution. The polymer-stabilized noble metal nanoparticles could be suitable hydrodehalogenation and reduction catalysts for the remediation of various chloroaromatic compounds in the environment. |
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General Papers
6:00 PM-8:00 PM, Wednesday, August 22, 2007 BCEC -- Exhibit Hall - B2, Poster
Division of Environmental Chemistry |