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Development of Palladium Catalysts Modified by Ruthenium and Molybdenum as Anode in Direct Ethanol Fuel Cell by Yonis Fornazier Filho; Ana Caroliny Carvalho da Cruz; Rolando Pedicini; José Ricardo Cezar Salgado; Priscilla Paiva Luz; Josimar Ribeiro is a Engineering article available to read on EtoBox.
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## Abstract Physical and electrochemical properties of Pd catalysts combined with Ru and Mo on carbon support were investigated. To this end, Pd, Pd~1.3~Ru~1.0~, Pd~3.2~Ru~1.3~Mo~1.0~ and Pd~1.5~Ru~0.8~Mo~1.0~ were synthesized on Carbon Vulcan XC72 support by the method of thermal decomposition of polymeric precursors and then physically and electrochemically characterized. The highest reaction yields are obtained for Pd~3.2~Ru~1.3~Mo~1.0~/C and Pd~1.5~Ru~0.8~Mo~1.0~/C and, as demonstrated by thermal analysis, they also show the smallest metal/carbon ratio compared the other catalysts. XRD (X-ray Diffraction) and Raman analyses show the presence of PdO and RuO~2~ for the Pd/C and the Pd~1.3~Ru~1.0~/C catalysts, respectively, a fact not observed for the Pd~3.2~Ru~1.3~ Mo~1.0~ /C and the Pd~1.5~Ru~0.8~Mo~1.0~/C catalysts. The catalytic activities were tested for the ethanol oxidation in alkaline medium. Cyclic voltammetry (CV) shows Pd~1.3~Ru~1.0~/C exhibiting the highest peak of current density, followed by Pd~3.2~Ru~1.3~Mo~1.0~/C, Pd~1.5~Ru~0.8~Mo~1.0~/C and Pd/C. From, chronoamperometry (CA), it is possible to observe the lowest rate of poisoning for the Pd~1.3~Ru~1.0~/C, followed
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- Author
- Yonis Fornazier Filho; Ana Caroliny Carvalho da Cruz; Rolando Pedicini; José Ricardo Cezar Salgado; Priscilla Paiva Luz; Josimar Ribeiro
- Publisher
- Springer Science and Business Media LLC
- Published
- 2021
- Language
- EN
- Field
- Engineering (Physical Sciences)