2011 Volume 52 Issue 9 Pages 1794-1798
Hydrogenation of ethylene (C2H4) over intermetallic CeNi2 and amorphous CeNi2Hx have been investigated. Amorphous CeNi2Hx catalyzed hydrogenation of C2H4 much more effectively than intermetallic CeNi2. For amorphous CeNi2Hx, activity of the hydrogenation of C2H4 was drastically enhanced by the presence of H2 at low temperature (<40°C) in H2/C2H4 whereas no activity was detected in He/C2H4 even at 160°C. According to C2H4 temperature-programmed desorption measurements, it is concluded that amorphous CeNi2Hx exhibits high activity due to its disordered structure where absorbed hydrogen plays an important role in the formation of active sites.