Influência do método de preparação de eletrocatalisadores PtRu/C sobre a atividade catalítica frente à reação de oxidação de etanol em meio ácido
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25/02/2016
25/02/2016
2013
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Resumo |
In this work the influence of variations in the borohydrate reduction method on the properties of PtRu/C electrocatalysts was investigated. The electrocatalysts were prepared using 1:1 ; 2:1; 5:1; 50:1 and 250:1 molar ratios of NaBH<sub>4</sub> to metals. The reduction was also performed by dripping or by fast addition of the solution. The results showed that PtRu nanoparticles obtained by fast addition had the smallest crystallite sizes. It was also noted that the catalytic activity increased as the borohydrate:metal molar ratio increased. The PtRu/C electrocatalyst (50:1) obtained by fast addition presented the best catalytic activity for ethanol electro-oxidation. |
Identificador |
GOMES, Walber dos Santos; SILVA, Uriel Lean Valente; SOUZA, José Pio Iúdice de. Influência do método de preparação de eletrocatalisadores PtRu/C sobre a atividade catalítica frente à reação de oxidação de etanol em meio ácido. Química Nova, São Paulo, v. 36, n. 4, p. 507-512, 2013. Disponível em: <http://www.scielo.br/pdf/qn/v36n4/v36n4a04.pdf>. Acesso em: 23 fev. 2016. <http://dx.doi.org/10.1590/S0100-40422013000400004>. 0100-4042 |
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Palavras-Chave | #Agentes oxidantes #Etanol #Catalisadores |
Tipo |
article |