Stability of noble metal catalysts for the hydrogen-oxygen reaction

Abstract Stability of various supported noble metal catalysts for initiation of the hydrogen-oxygen reaction was tested by means of steam-hydrogen treatment at 1000–1200 °C followed by a simple activity test. Many catalysts were stable to 1100 °C, but all lost some activity at 1200 °C. The most active with very good stability was an iridium/alumina catalyst of high iridium content.