The catalysts filled into beds of 2.0 cm were subjected to the gas flow and temperature program depicted in Figure . The program started with inline activation at 400 °C under O2, followed by testing under two gas flow conditions (𝑄 !"#$ /𝑄 %& = 18.3/200.0 ccm/ccm = 0.09 and 35.6/200.0 ccm/ccm = 0.18) at five temperatures between 300 °C to 425 °C with 25°C intervals.