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On the stepwise change of activation energies in the hydrodechlorination of chlorobenzene over supported nickel

Keane, Mark A and Larsson, Ragnar LU (2008) In Catalysis Communications 9(3). p.333-336
Abstract
Kinetics of chlorobenzene hydrodechlorination have been measured over Ni on SiO2, Al2O3, MgO, activated carbon and graphite. A stepwise variation of E-a is analysed using the selective energy transfer model where E-a is identified as the vibrational energy associated with an excitation of the chlorobenzene out-of-plane C-H bending mode. Variation of E-a 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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author
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publishing date
type
Contribution to journal
publication status
published
subject
keywords
apparent activation energy, chlorobenzene, selective energy transfer model, catalytic hydrodechlorination, anharmonicity, heat of, adsorption
in
Catalysis Communications
volume
9
issue
3
pages
333 - 336
publisher
Elsevier
external identifiers
  • wos:000252293400003
  • scopus:36549044459
ISSN
1566-7367
DOI
10.1016/j.catcom.2007.06.024
language
English
LU publication?
yes
id
759d94dd-c61a-45fd-960a-35a1d9890e66 (old id 1199955)
date added to LUP
2016-04-01 11:44:11
date last changed
2023-09-01 05:19:57
@article{759d94dd-c61a-45fd-960a-35a1d9890e66,
  abstract     = {{Kinetics of chlorobenzene hydrodechlorination have been measured over Ni on SiO2, Al2O3, MgO, activated carbon and graphite. A stepwise variation of E-a is analysed using the selective energy transfer model where E-a is identified as the vibrational energy associated with an excitation of the chlorobenzene out-of-plane C-H bending mode. Variation of E-a 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).}},
  author       = {{Keane, Mark A and Larsson, Ragnar}},
  issn         = {{1566-7367}},
  keywords     = {{apparent activation energy; chlorobenzene; selective energy transfer model; catalytic hydrodechlorination; anharmonicity; heat of; adsorption}},
  language     = {{eng}},
  number       = {{3}},
  pages        = {{333--336}},
  publisher    = {{Elsevier}},
  series       = {{Catalysis Communications}},
  title        = {{On the stepwise change of activation energies in the hydrodechlorination of chlorobenzene over supported nickel}},
  url          = {{http://dx.doi.org/10.1016/j.catcom.2007.06.024}},
  doi          = {{10.1016/j.catcom.2007.06.024}},
  volume       = {{9}},
  year         = {{2008}},
}