Development of Ternary and Quaternary Catalysts for the Electrooxidation of Glycerol

被引：7

作者：

Artem, L. M. ^{[1
]}

Santos, D. M. ^{[1
]}

De Andrade, A. R. ^{[2
]}

Kokoh, K. B. ^{[3
]}

Ribeiro, J. ^{[1
]}

机构：

[1] Univ Fed Espirito Santo, Dept Chem, BR-29075910 Vitoria, ES, Brazil

[2] Univ Sao Paulo, Dept Chem, BR-14040901 Ribeirao Preto, SP, Brazil

[3] Univ Poitiers, LACCO, Equipe Electrocatalyse, UMR 6503, F-86022 Poitiers, France

来源：

SCIENTIFIC WORLD JOURNAL | 2012年

关键词：

FUEL-CELLS; ETHANOL OXIDATION; ELECTROCATALYSIS; ALCOHOL;

D O I：

10.1100/2012/502083

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

This work consisted in the preparation of platinum-based catalysts supported on carbon (Vulcan XC-72) and investigation of their physicochemical and electrochemical properties. Catalysts of the C/Pt-Ni-Sn-Me (Me = Ru or Ir) type were prepared by the Pechini method at temperature of 350 degrees C. Four different compositions were homemade: C/Pt60Sn10Ni30, C/Pt60Sn10Ni20Ru10, C/Pt60Sn10Ni10Ru20, and C/Pt60Sn10Ni10Ir20. These catalysts were electrochemically and physically characterized by cyclic voltammetry (CV), chronoamperometry (CA) in the presence of glycerol 1.0 mol dm(-3), X-ray diffraction (XRD), and high-resolution transmission electron microscopy (HRTEM). XRD results showed the main peaks of face-centered cubic Pt. The particle sizes obtained from XRD and HRTEM experiments were close to values ranging from 3 to 8.5 nm. The CV results indicate behavior typical of Pt-based catalysts in acid medium. The CV and CA data reveal that quaternary catalysts present the highest current density for the electrooxidation of glycerol.

引用

页数：6

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