Hydrocarbon transformations on Co–zeolite in catalytic environment of different redox properties at 170–260 °C.

Redox properties of catalytic environment, namely He as neutral, H 2 as reducing and H 2 –H 2 O as reducing–oxidative one, determine the conversion of hydrocarbons on Co–zeolite catalysts at 170–260 °C as well as product distribution. The highest yield of isomerized products was achieved in reducing medium, while the methane formation was suppressed most efficiently in neutral and reducing–oxidative environments. Two distinct ranges can be identified for temperature dependencies of reaction parameters, namely 170–210 and 220–260 °C. [ABSTRACT FROM AUTHOR]