OXYGEN REDUCTION CATALYZED BY CARBON-SUPPORTED IRIDIUM-CHELATES

被引：17

作者：

BOUWKAMPWIJNOLTZ, AL

VISSCHER, W

VANVEEN, JAR

机构：

[1] Laboratory for Inorganic Chemistry and Catalysis, Eindhoven University of Technology, 5600 MB Eindhoven

来源：

ELECTROCHIMICA ACTA | 1994年 / 39卷 / 11-12期

关键词：

OXYGEN REDUCTION; IRIDIUM-OCTAETHYLPORPHYRIN; IRIDIUM-TETRAPHENYLPORPHYRIN; IRIDIUM-PHTHALOCYANINE; PYROLYSIS;

D O I：

10.1016/0013-4686(94)85148-4

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Carbon supported iridium-octaethylporphyrin (IrOEP), iridium-tetraphenylporphyrin (IrTPP) and iridium-phthalocyanine (IrPc) were studied in acid for the oxygen reduction. Both porphyrins give a four-electron reduction, although a peculiar deactivation at low potentials occurs. At IrPc and heat treated porphyrins hydrogen peroxide is formed. Results are compared with carbon monoxide oxidation experiments at these catalysts. A single site mechanism is proposed for the oxygen reduction mechanism.

引用

页码：1641 / 1645

页数：5

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