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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
chemistry
MWCNT activation and its influence on the catalytic performance of Pt/MWCNT catalysts for selective hydrogenation
Carbon, Volume 46, No. 9, Year 2008
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Description
Multi-walled carbon nanotubes were submitted to three activation procedures: nitric acid oxidation, ball-milling and air oxidation. The influence of these treatments on nanotubes surface chemistry and morphology was evaluated by XPS, Raman and infrared spectroscopy, TGA, TPD, nitrogen adsorption and TEM. The three activated materials were used to prepare Pt supported catalysts from the organometallic precursor [Pt(CH3)2(COD)]. The influence of the activation treatments, together with that of a post-reduction thermal treatment, on the performances of the catalytic systems in the selective hydrogenation of cinnamaldehyde was investigated. It was shown that the best compromise between catalyst activity and selectivity requires a low amount of oxygenated groups on the support surface of the final catalyst, typically less than 700 μmol/g CO + CO2 evolved during TPD experiments, together with an optimized platinum particle size ranging between 10 and 20 nm. © 2008 Elsevier Ltd. All rights reserved.
Authors & Co-Authors
Solhy, Abderrahim
France, Toulouse
Université Fédérale Toulouse Midi-pyrénées
Machado, Bruno F.
Portugal, Porto
Universidade do Porto
Pereira, Manuel Fernando R.
Portugal, Porto
Universidade do Porto
Figueiredo, José Luís
Portugal, Porto
Universidade do Porto
Faria, Joaquim Luís
Portugal, Porto
Universidade do Porto
Serp, Philippe S.
France, Toulouse
Université Fédérale Toulouse Midi-pyrénées
Statistics
Citations: 173
Authors: 6
Affiliations: 3
Identifiers
Doi:
10.1016/j.carbon.2008.04.018
ISSN:
00086223
Research Areas
Environmental