Estudo do efeito de tratamentos térmicos em catalisadores de PtRu/C frente à reação de oxidação de hidrogênio na presença de CO

Química Nova

Pietro Papa Lopes¹  Edson Antonio Ticianelli¹ 

[1] ,Universidade de São Paulo Instituto de Química de São Carlos Departamento de Físico QuímicaSão Carlos SP ,Brasil

关键词: electrocatalysis;    thermal treatment;    CO tolerance;   

DOI  :  10.1590/S0100-40422007000500038

来源: SciELO

【 摘 要 】

In this work the effects of time and temperature of thermal treatments under reducing atmosphere (H2) on PtRu/C catalysts for the hydrogen oxidation reaction (HOR) in the presence of CO on a proton exchange membrane fuel cell (PEMFC) single cells have been studied. It can be seen that the increase of the treatment temperature leads to an increasing sintering of the catalyst particles with reduction of the active area, although the catalyst treated at 550 ºC presents more CO tolerance for the HOR.

【 授权许可】

CC BY-NC   
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