H2 production during the catalytic reaction of ethanol on Au/CeO2, Rh–Au/CeO2 and Pt–Rh/CeO2.

[Ethanol]/[O2] = 2/3; [Catalyst] = 50 mg;

F(ethanol flow) = 200 ml min−1;

[Ethanol]o = 2.5 × 10−6 mol ml−1 for Au/CeO2 and 3.2 × 10−6 mol ml−1 for both Rh–Au/CeO2 and Pt–Rh/CeO2.

All measurements taken under steady state conditions