Hydrogenation of carbon dioxide: a comparison of different types of active catalysts

Comparison of the activity and CO selectivity of four principally different types of catalysts in CO 2 hydrogenation, namely, LaNi 5 , Rh/ZnO–CuO, fumed Fe 2 O 3 –K 2 O–Al 2 O 3 and Au/SO 4 –ZrO 2 , in the entire temperature range at an atmospheric pressure was performed. The use of the intermetallide LaNi 5 catalyst provides an enhanced activity in CO 2 hydrogenation with prevailing methane formation, while other catalysts demonstrated predominant formation of CO.