Utilize este identificador para referenciar este registo: http://hdl.handle.net/10198/1354
Título: High temperature activation of noble metal catalysts supported on carbon multi-walled nanotubes for selective hydrogenation of unsaturated aldehydes
Autor: Machado, Bruno
Gomes, Helder
Serp, Philippe
Kalck, Philippe
Figueiredo, José
Faria, Joaquim
Palavras-chave: Carbon nanotubes
Cinnamaldehyde selective Hydrogenation
Surface chemistry
Data: 2007
Citação: Machado, Bruno; Gomes, Helder; Serp, Philippe; Kalck, Philippe; Figueiredo, José; Faria, Joaquim (2007) - High temperature activation of noble metal catalysts supported on carbon multi-walled nanotubes for selective hydrogenation of unsaturated aldehydes. In VIII Europacat. Turku/Åbo, Finlândia.
Resumo: Selective catalytic hydrogenation of α,β-unsaturated aldehydes represents today an important route in the industrial preparation of fine chemicals. Heterogeneous catalysts are normally less selective than the homogeneous, but easier to handle. Therefore, there is still room for improvement especially regarding catalyst selectivity to the unsaturated alcohol. Our work shows that the surface chemistry also plays an important role on selectivity. We describe an activation procedure for platinum and iridium metal catalysts supported on carbon nanotubes, which improves significantly both selectivity and activity. In the case of platinum, selectivity towards the unsaturated alcohol increased 8 times to a maximum of 66% at 79% conversion.
URI: http://hdl.handle.net/10198/1354
Aparece nas colecções:DTQB - Artigos em Proceedings Não Indexados ao ISI/Scopus

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