Table III

A: Product Distribution (in mol%) during Ethanol Reaction [Ethanol]/[O2] = 2/3; [Catalyst] = 50 mg; F = 200 ml min−1 over Au/CeO2 at the Indicated Temperatures
473 K 573 K 673 K 773 K 873 K 973 K 1073 K
CH3CHO 56.44 25.52 9.88 6.46 5.01 0.1 0.07
CH4 7.53 5.67 18.50 7.26 8.81 24.77 24.65
CH3C(O)CH3 – 3.18 6.69 36.98 26.82 0.75 –
CO – 8.25 10.23 16.80 22.02 31.12 31.34
CO2 31.91 55.54 52.32 27.85 32.52 34.14 35.01
CO/CO2 0 0.15 0.20 0.60 0.68 0.91 0.90
H2 4.12 1.86 2.37 4.65 4.81 9.11 8.93
B: Product Distribution (in mol%) during Ethanol Reaction [Ethanol]/[O2] = 2/3; [Catalyst] = 50 mg; F = 200 ml min−1 over Rh–Au/CeO2 at the Indicated Temperatures
473 K 573 K 673 K 773 K 873 K 973 K 1073 K
CH3CHO 66.60 0.74 0.04 0.03 0.04 0.03 0.01
CH4 17.99 19.04 16.95 14.39 11.24 10.97 12.63
CH3C(O)CH3 – 1.49 0.12 0.23 – – –
CO – 24.34 13.98 15.65 19.70 21.62 23.58
CO2 – 49.44 56.16 54.62 53.68 52.75 49.00
CO/CO2 0.49 0.25 0.29 0.37 0.41 0.48
H2 15.42 4.95 12.74 15.09 15.34 14.63 14.77
C: Product Distribution (in mol%) during Ethanol Reaction [Ethanol]/[O2] = 2/3; [Catalyst] = 50 mg; F = 200 ml min−1 over Pt–Rh/CeO2 at the Indicated Temperatures
473 K 573 K 673 K 773 K 873 K 973 K 1073 K
CH3CHO 48.72 0.97 2.72 0.66 – – –
CH4 10.84 17.71 17.10 15.78 11.98 9.07 9.53
CH3C(O)CH3 – – 1.18 2.28 – – –
CO – 15.25 13.33 12.12 12.14 13.06 16.26
CO2 32.62 61.67 58.31 57.46 58.82 60.26 59.86
CO/CO2 0.25 0.23 0.21 0.21 0.22 0.27 0.25
H2 7.82 4.39 7.36 11.69 17.07 17.61 14.35