| Hydrogen production from renewable biomass has attracted much attention as a potential route to the resolve of energy crisis. The production of hydrogen from renewable biomass-derived resource by aqueous-phase reforming is not only a novel catalytic process, but also a major challenge. In this study, a new catalyst, platinum supported on the γ-Al2O3 modified by rare earth metal oxides-CeO2, was developed for aqueous-phase reforming. Catalytic activity test was employed to evaluate the activity, hydrogen selectivity. N2 physical adsorption, CO chemical adsorption, X-ray diffraction (XRD), CO-TPD and temperature-programmed reduction (TPR) experiments were carried out to obtain better insight into the physicochemical properties of the catalysts and interaction between metal Pt and modified supports. The results show that we obtain the excellent catalyst for aqueous-phase reforming of ethylene glycol and discuss catalysis mechanism of the reforming process on the Pt/CeO2-Al2O3. The following conclusions could be drawn through the thesis work: 1 Catalytic performance of aqueous-phase reforming over Pt catalysts supportedon Al2O3 modified by CeHigh activity of catalyst can be attributed to strong interaction between Pt and support (addition). The other hand, structure of support may play a large role in effect of dispersion of Pt on the surface of catalyst. The activity of Pt catalyst supported on Al2O3 for aqueous-phase reforming is increased by addition of Ce. Conversion of ethylene glycol is improved by 20% at least, and hydrogen yield is approach to 100%. 2, Effect of addition Ce on supportsCeO2 as support or addition can improve dispersion of Pt and there is an optimum value of CeO2 content. Dispersion of active site Pt depends on not only surface areas of support but also interaction between Pt and support or addition. Temperature of calcinations of catalyst can change interaction and existing fashion among...
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