POROUS CLUSTERS OF SILVER POWDER PROMOTED BY ZIRCONIUM OXIDE FOR USE AS A CATALYST IN GAS DIFFUSION ELECTRODES, AND METHOD FOR THE PRODUCTION THEREOF

摘要

A catalyst including: a plurality of porous clusters of silver particles, each cluster of the clusters including: (a) a plurality of primary particles of silver, and (b) crystalline particles of zirconium oxide (ZrO2), wherein at least a portion of the crystalline particles of ZrO2 is located in pores formed by a surface of the plurality of primary particles of silver.

主权项

1. A catalyst comprising: a plurality of porous clusters of silver particles, each cluster of said clusters including a plurality of primary particles of silver and crystalline particles of zirconium oxide (ZrO2), wherein at least a portion of said crystalline particles of ZrO2 is located in pores formed by a surface of said plurality of primary particles, wherein said primary particles have an average size 20 to 100 nanometers, the pores in said porous clusters have an average characteristic diameter of 15 to 250 nanometers and the crystalline particles of ZrO2 have an average particle size of less than about 50 nanometers.