Institutional Repository
Technical University of Crete
Technical University of Crete
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| URI: | http://purl.tuc.gr/dl/dias/18E67E79-2EFD-44B3-BA33-FE5CE7C871E3 | ||
| Year | 1994 | ||
| Type of Item | Peer-Reviewed Journal Publication | ||
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| Bibliographic Citation | M. Koussathana, N. Vamvouka and X. Verykios, "Improved hydrogenation catalysts for coal-derived liquids", Int. J. Energy Res., vol. 18, no. 2, pp. 243-250, Mar. 1994. doi:10.1002/er.4440180222 https://doi.org/10.1002/er.4440180222 | ||
| Appears in Collections |
Benzene, naphthalene and biphenyl hydrogenation in a slurry-phase reactor were used as probe reactions to investigate the influence of bimetallic catalyst formulations and altervalent carrier doping on hydrogenation activity and sulphur-poisoning characteristics. It was found that addition of a secondary metal such as Pd, Ir or Re to primary metals such as Pt, Rh, or Ru, has a beneficial influence on these parameters. Significant enhancements in hydrogen adsorption capacity, hydrogenation activity and sulphur tolerance were observed when metals were dispersed on TiO2 doped with higher-valence cations. The enhancement factors were found to be a function of the dopant concentration in the carrier. Results related to altervalent carrier doping are explained in terms of long-range electronic interactions at the metal-support interface which alter the work function of surface metal atoms.
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