The purpose of this study was to investigate the effect of the preparation method on CeO2-promoted Cu/γ -Al2O3 catalysts for the high temperature shift reaction using simulated waste-derived syngas (H2 + CO). To investigate the effect of preparation method on the CeO2-promoted Cu/γ-Al2O3 catalyst, we compared catalytic performance over Ce/Cu/γ-Al2O3, Ce-Cu/γ-Al2O3, Cu/Ce/γ-Al2O3, and Cu/γ-Al2O3 catalysts, and tried to explain the differences in catalytic performance with various characterization methods. The physico-chemical properties of the CeO2-promoted catalysts were characterized using surface spectroscopies such as BET, XRD, TPR, XPS, Raman spectroscopy, photoluminescence spectroscopy, and N2O-chemisorption. The catalyst characterizations were correlated with activity results in the high temperature shift reaction.

Metal oxide promoted ceria-zirconia (Ce/Zr = 6/4) catalysts was applied to deoxygenation (DO) of oleic acid in batch mode at 300℃ under 1 bar of 20% H2/N2 condition. Metal oxide promoted ceria-zirconia catalysts were prepared by a co-precipitation method. As a result, Ni-Ce0.6Zr0.4O2 catalyst exhibited much higher oleic acid conversion, selectivity to C9 ~ C17 compounds (diesel fuel range), and oxygen removal efficiency than the others. This is due to the presence of free NiO species, synergy effect of nickel and Ce0.6Zr0.4O2, highest BET surface area, and the strong metal to support interaction (SMSI).

Simulated waste-derived synthesis gas has been tested for hydrogen production through water gas shift (WGS) reaction in the temperature range of 240oC ~ 400oC over supported Pt catalysts prepared by an incipient wetness impregnation method. MG30, MgO, ZrO2, Al2O3 and CeO2 were employed as supports for WGS reaction in this study. 1 wt.% Pt/ CeO2 catalyst exhibited the highest CO conversion as well as 100% CO2 selectivity. This is due to easier reducibility of Pt/CeO2 and high oxygen mobility and oxygen storage capacitiy of CeO2. Pt/CeO2 catalyst can be a promising catalyst for WGS reaction from waste-derived synthesis gas.