Measurements of active site concentrations at rhodium, osmium, iridium, and platinum surfaces by 1,1- diphenyl- 2- picrylhydrazine oxidation in the liquid phase, and by carbon monoxide chemisorption from the gas phase

Article abstract of DOI:10.1016/0021-9517(70)90181-8

The reaction at room temperature between diphenylpicrylhydrazine and chemisorbed oxygen may be used to determine, in a simple manner, active surface site concentrations for rhodium, iridium, and platinum powders. The method is not suitable for osmium. A f