Abstract: Chemisorption combined with IR spectrometry and TPD and microreactor techniques have been used to investigate the adsorption activation and partial oxidation reactivity of CO₂ and C₂H₆ on title catalyst. It is found that C₂H₆ is chemisorbed on the surface of the catalyst through H of its CH bond and terminal O of Mo=O bond. For the adsorption of CO₂ on the catalyst besides the linear type and the scissors type there appears another horizo ntal type . The lattice oxygen of the catalyst is found to play an important role in partial oxidation. A mechanism of partial oxidation is proposed.

Key words: CO₂ activation, ethane oxidation, complex oxide support, bimetallic Pd-Cu catalyst