Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
52055 | Catalysis Communications | 2008 | 4 Pages |
Abstract
Kinetics of chlorobenzene hydrodechlorination have been measured over Ni on SiO2, Al2O3, MgO, activated carbon and graphite. A stepwise variation of Ea is analysed using the selective energy transfer model where Ea is identified as the vibrational energy associated with an excitation of the chlorobenzene out-of-plane C–H bending mode. Variation of Ea with vibrational quantum number yields a vibrational frequency of 749 cm−1 and a value (−1.1 cm−1) for the anharmonicity term, which is characteristic of bending vibrational modes. Our analysis suggests that the reacting species are weakly adsorbed on the catalyst: heat of adsorption = −0.31 kJ mol−1.
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Physical Sciences and Engineering
Chemical Engineering
Catalysis
Authors
Mark A. Keane, Ragnar Larsson,